Free 101 Articles – Space Telescopes and Observatories
🌠 1. Introduction to Space Telescopes
Space telescopes allow astronomers to observe the universe without atmospheric interference. Unlike ground-based telescopes, they capture clearer images of distant galaxies, stars, and planets. The Hubble Space Telescope, launched in 1990, has provided some of the most detailed images of the universe.
🌌 2. History of Space Telescopes
The idea of a space telescope was proposed as early as the 1920s. The first operational space telescope, the Orbiting Astronomical Observatory (OAO-2), was launched in 1968. Since then, advanced telescopes like Hubble, Chandra, and Spitzer have expanded our knowledge of the cosmos.
🚀 3. How Space Telescopes Work
Space telescopes use mirrors and lenses to gather light and focus it onto detectors. Unlike ground-based telescopes, they operate above Earth’s atmosphere, avoiding distortion caused by air turbulence. This allows them to capture high-resolution images and detect faint signals.
🌙 4. The Hubble Space Telescope
Launched in 1990, the Hubble Space Telescope orbits 547 km above Earth. It has captured detailed images of galaxies, nebulae, and exoplanets. Its repair missions have upgraded its instruments, extending its lifespan and enhancing its capabilities.
🌟 5. The James Webb Space Telescope (JWST)
Launched in 2021, the JWST is the most powerful space telescope ever built. It uses a large segmented mirror and infrared detectors to observe the early universe, search for habitable planets, and study the atmospheres of exoplanets.
🔭 6. The Spitzer Space Telescope
The Spitzer Space Telescope, launched in 2003, was designed to detect infrared radiation. It studied dust clouds, star formation, and distant galaxies. Spitzer’s infrared capabilities helped identify exoplanet atmospheres and black hole formations.
🌠 7. The Chandra X-ray Observatory
Launched in 1999, the Chandra X-ray Observatory detects X-rays from high-energy regions like black holes and neutron stars. It helped identify dark matter, study galaxy clusters, and explore the remnants of supernovae.
🌌 8. The Fermi Gamma-ray Space Telescope
Fermi, launched in 2008, detects gamma rays from black holes, pulsars, and supernovae. Its findings have expanded our understanding of dark matter and cosmic rays, revealing the energetic processes occurring in the universe.
🚀 9. The Kepler Space Telescope
Launched in 2009, Kepler searched for exoplanets by detecting dips in starlight caused by planetary transits. It discovered over 2,600 exoplanets, including Earth-sized planets in habitable zones, revolutionizing our understanding of planetary systems.
🌙 10. The TESS Mission (Transiting Exoplanet Survey Satellite)
Launched in 2018, TESS monitors the brightness of stars to identify planetary transits. It has discovered thousands of exoplanets and provided valuable data on planetary orbits, sizes, and compositions.
🌟 11. Infrared vs. Optical Telescopes
Infrared telescopes, like Spitzer and JWST, detect heat radiation, penetrating dust clouds and revealing hidden stars and galaxies. Optical telescopes, like Hubble, capture visible light, producing detailed color images of the cosmos.
🔭 12. The Role of Radio Telescopes in Space
Radio telescopes detect long-wavelength signals from distant galaxies and pulsars. They have identified cosmic microwave background radiation, providing evidence for the Big Bang theory and studying black hole activity.
🌠 13. The Planck Satellite
Launched in 2009, Planck mapped the cosmic microwave background (CMB) in high detail. Its data revealed the universe’s age, composition, and early structure, confirming key aspects of the Big Bang theory.
🌌 14. The Herschel Space Observatory
Launched in 2009, Herschel studied the formation of stars and galaxies in the far-infrared spectrum. It revealed details about molecular clouds, star nurseries, and the chemical composition of interstellar dust.
🚀 15. The Gaia Mission
Gaia, launched in 2013, creates a detailed 3D map of the Milky Way. It tracks the positions, motions, and brightness of over a billion stars, improving our understanding of the galaxy’s structure and evolution.
🌙 16. Space-Based vs. Ground-Based Observatories
Space-based observatories avoid atmospheric distortion, capturing clearer images. Ground-based telescopes, however, are easier to maintain and upgrade, often using adaptive optics to correct for atmospheric interference.
🌟 17. How Space Telescopes Search for Exoplanets
Space telescopes detect exoplanets using transit, radial velocity, and direct imaging methods. The transit method, used by Kepler and TESS, measures dips in starlight when a planet crosses in front of its star.
🔭 18. The Role of Adaptive Optics
Adaptive optics adjust a telescope’s mirrors in real-time to correct for atmospheric distortion. Though more commonly used in ground-based telescopes, similar technologies help improve space telescope image quality.
🌠 19. Studying Star Formation with Space Telescopes
Infrared and radio telescopes like Spitzer and Herschel can peer into dense dust clouds where stars form. These observations reveal details about star birth, protoplanetary disks, and early planetary system development.
🌌 20. Observing Galaxies with Space Telescopes
Space telescopes like Hubble and JWST capture high-resolution images of distant galaxies. These observations help astronomers study galaxy formation, mergers, and the role of dark matter in galaxy structure.
🚀 21. Detecting Black Holes with Space Telescopes
X-ray telescopes like Chandra detect high-energy emissions from matter falling into black holes. Infrared and optical telescopes also capture gravitational lensing effects, helping identify black hole locations and sizes.
🌙 22. The Role of Space Telescopes in Dark Matter Research
Space telescopes detect gravitational lensing and cosmic background radiation, providing clues about dark matter’s distribution and interaction with ordinary matter.
🌟 23. The James Webb Space Telescope and Early Galaxies
JWST’s infrared capabilities allow it to observe light from the earliest galaxies, which has been stretched into the infrared by cosmic expansion. These observations help reveal how galaxies formed after the Big Bang.
🔭 24. How Space Telescopes Measure Cosmic Expansion
Space telescopes measure redshift — the stretching of light from distant objects — to calculate the rate of cosmic expansion. These measurements provide insights into dark energy and the fate of the universe.
🌠 25. Space Telescopes and the Search for Habitable Planets
TESS and JWST are designed to detect Earth-like planets in habitable zones. They analyze planetary atmospheres for signs of water vapor, oxygen, and other biosignatures.
🌌 26. The Role of Spectroscopy in Space Telescopes
Spectroscopy measures the light spectrum of celestial objects. Space telescopes use this technique to identify the chemical composition, temperature, and motion of stars and planets.
🚀 27. The Impact of Space Debris on Space Telescopes
Space debris poses a risk to telescopes in low Earth orbit. Protective shielding and strategic orbit placement help minimize damage from micrometeoroids and man-made debris.
🌙 28. The Future of Space Telescopes
Next-generation telescopes like the Nancy Grace Roman Space Telescope and the Habitable Worlds Observatory will expand our ability to study dark matter, exoplanets, and early galaxy formation.
🌟 29. How Space Telescopes Contribute to Astrobiology
Space telescopes search for biosignatures like oxygen, methane, and water vapor in exoplanet atmospheres. These observations could reveal evidence of alien life.
🔭 30. Comparing Hubble and James Webb
Hubble focuses on visible and ultraviolet light, while JWST captures infrared. Together, they provide complementary views of the universe, from star formation to the early cosmos.
🌠 31. The Role of the Nancy Grace Roman Space Telescope
The Nancy Grace Roman Space Telescope, set to launch in the mid-2020s, will survey large portions of the sky in infrared light. It will study dark energy, exoplanets, and cosmic structures. Its wide-field view will allow it to capture images of thousands of galaxies simultaneously, helping astronomers understand the universe’s expansion and the nature of dark energy.
🌌 32. Hubble’s Contributions to Astronomy
Since its launch in 1990, Hubble has provided some of the most detailed images of the cosmos. It confirmed the existence of dark matter, measured the rate of cosmic expansion, and captured the birth and death of stars. Its observations have transformed our understanding of black holes, galaxies, and planetary systems.
🚀 33. The James Webb Space Telescope and Star Formation
JWST’s infrared vision allows it to peer through dust clouds to study star formation. Its high resolution reveals details of protoplanetary disks and the earliest stages of star birth. JWST’s ability to see faint objects at great distances helps astronomers understand how stars and planetary systems form and evolve.
🌙 34. Observing Exoplanet Atmospheres with Space Telescopes
JWST and Hubble analyze the light passing through exoplanet atmospheres to identify chemical compositions. Water vapor, methane, and oxygen are indicators of habitability. These telescopes help determine whether exoplanets have the right conditions to support life.
🌟 35. How Space Telescopes Detect Gravitational Waves
While ground-based observatories like LIGO detect gravitational waves directly, space telescopes observe their effects on cosmic structures. Hubble and JWST can detect light from the aftermath of events like neutron star mergers, providing insights into the nature of gravity and spacetime.
🔭 36. The Importance of the Faint Object Camera on Hubble
The Faint Object Camera (FOC) on Hubble was designed to capture images of very dim objects. It provided high-resolution data on distant galaxies, nebulae, and star clusters. This capability allowed astronomers to study objects at the edge of the observable universe.
🌠 37. Infrared Space Telescopes and Star Nurseries
Infrared telescopes like Spitzer and JWST penetrate thick clouds of dust where stars are born. These observations reveal the formation of protostars and the development of planetary disks. Understanding these early stages helps explain how planetary systems form.
🌌 38. Why Space Telescopes Avoid Light Pollution
Ground-based telescopes face challenges from light pollution, which reduces visibility. Space telescopes operate above Earth’s atmosphere, where there is no interference from artificial light or air turbulence. This allows them to capture clearer and more detailed images of celestial objects.
🚀 39. X-Ray Telescopes and Black Holes
X-ray telescopes like Chandra detect high-energy emissions from black holes and neutron stars. These telescopes reveal the structure of black hole accretion disks and the powerful jets of matter they eject. X-ray data helps map the location and size of black holes.
🌙 40. The Future of Ultraviolet Space Telescopes
Ultraviolet telescopes provide insights into hot, young stars and galaxy formation. Future UV missions will study the atmospheres of exoplanets and the chemical composition of distant stars. Combining UV and infrared data offers a complete picture of stellar and planetary formation.
🌟 41. The Role of Space Telescopes in Mapping the Universe
Telescopes like Gaia create 3D maps of stars and galaxies. These maps show the motion and distribution of cosmic structures, helping astronomers understand the large-scale structure of the universe and how galaxies form and evolve.
🔭 42. Detecting Supernovae with Space Telescopes
Space telescopes detect the light and energy from supernova explosions. Hubble and JWST have observed the early stages of supernovae, revealing details about the life cycle of stars and the formation of heavy elements.
🌠 43. Studying Cosmic Background Radiation with Space Telescopes
The Planck satellite mapped the cosmic microwave background (CMB) — the afterglow of the Big Bang. This data provides clues about the universe’s age, shape, and composition, confirming key predictions of the Big Bang theory.
🌌 44. The Search for Dark Energy with Space Telescopes
Dark energy drives the accelerating expansion of the universe. Space telescopes measure the brightness and distance of supernovae and the redshift of galaxies to estimate the rate of cosmic expansion and the properties of dark energy.
🚀 45. Observing Star Clusters with Space Telescopes
Hubble and JWST have captured detailed images of globular and open star clusters. These clusters reveal information about stellar evolution and the gravitational forces that shape galaxy formation.
🌙 46. How Space Telescopes Measure Galaxy Rotation
Spectroscopy from space telescopes measures the Doppler shift of light from rotating galaxies. These measurements provide insights into galaxy mass, dark matter distribution, and the interaction of galaxies in clusters.
🌟 47. The Importance of Multi-Wavelength Observation
Different telescopes observe in various wavelengths — radio, infrared, visible, ultraviolet, and X-ray. Combining data from multiple wavelengths provides a complete picture of cosmic objects and phenomena, from star formation to black hole activity.
🔭 48. Space Telescopes and the Study of Comets
Space telescopes observe comets as they approach the Sun. They analyze the composition of comet tails and measure water and gas released during outgassing. This data reveals the origins of comets and their role in delivering water to planets.
🌠 49. How Space Telescopes Track Asteroids
Telescopes like NEOWISE track the position and trajectory of near-Earth objects (NEOs). Monitoring asteroid orbits helps predict potential impacts and informs planetary defense strategies. Infrared data reveals the size and composition of asteroids.
🌌 50. Discovering Distant Quasars with Space Telescopes
Quasars are among the brightest objects in the universe, powered by supermassive black holes. Space telescopes measure the light and energy from quasars, helping astronomers understand the early universe and the formation of massive galaxies.
🌠 51. Studying the Cosmic Web with Space Telescopes
The cosmic web is the large-scale structure of the universe, made up of galaxies, filaments, and voids. Space telescopes like Hubble and JWST map this web by measuring the distribution of galaxies and gas. Understanding the cosmic web helps astronomers trace the influence of dark matter and dark energy.
🌌 52. The Use of Space Telescopes in Measuring Galactic Collisions
When galaxies collide, they trigger bursts of star formation and alter galactic structures. Space telescopes like Hubble capture detailed images of these interactions. By studying galactic collisions, astronomers understand how galaxies evolve over billions of years.
🚀 53. How Space Telescopes Detect Distant Star Clusters
Star clusters contain groups of stars that form together from the same gas cloud. Space telescopes detect these clusters by observing their brightness and color. Studying star clusters helps astronomers understand the formation and life cycle of stars.
🌙 54. Studying Planetary Nebulae with Space Telescopes
Planetary nebulae are the outer layers of dying stars, illuminated by the remaining stellar core. Telescopes like Hubble capture the complex shapes and vivid colors of nebulae. These observations reveal the chemical elements released into space during star death.
🌟 55. The Importance of Spectroscopy in Space Telescopes
Spectroscopy splits light into its component wavelengths, revealing the chemical composition, temperature, and motion of celestial objects. Space telescopes use spectroscopy to study stars, galaxies, and exoplanet atmospheres, providing vital clues about their formation and evolution.
🔭 56. How Space Telescopes Monitor Stellar Flares
Stellar flares are sudden bursts of energy from stars, which can impact planetary atmospheres. Telescopes like Kepler and TESS detect these flares by measuring changes in a star’s brightness. Studying stellar flares helps predict space weather and its effects on exoplanets.
🌠 57. The Role of Infrared Telescopes in Studying Cold Objects
Infrared telescopes like Spitzer and JWST are ideal for studying cold objects like brown dwarfs, distant planets, and comets. Infrared light reveals heat signatures, even from objects hidden by dust clouds. These observations help identify new planetary systems.
🌌 58. Observing Gamma-Ray Bursts with Space Telescopes
Gamma-ray bursts are the most energetic events in the universe, caused by star collapses and neutron star mergers. Space telescopes like Fermi and Swift detect these bursts and their afterglows, helping astronomers understand the death of massive stars.
🚀 59. Studying the Lifecycle of Stars with Space Telescopes
Space telescopes capture the birth, life, and death of stars. Infrared telescopes study star formation, while X-ray telescopes observe stellar death in supernovae. By piecing together these observations, astronomers build models of stellar evolution.
🌙 60. The Use of Microlensing by Space Telescopes
Microlensing occurs when a massive object’s gravity bends the light of a background star. Telescopes like Hubble use microlensing to detect exoplanets and measure dark matter. This method provides insights into the distribution of matter in the universe.
🌟 61. How Space Telescopes Study Star Formation in Molecular Clouds
Molecular clouds are dense regions of gas and dust where stars form. Infrared telescopes like JWST penetrate these clouds to reveal forming stars and planetary disks. Studying molecular clouds helps astronomers understand the conditions needed for star birth.
🔭 62. Observing Exoplanet Transits with Space Telescopes
Telescopes like TESS and Kepler detect exoplanets by measuring the drop in a star’s brightness when a planet crosses in front of it. Transit data reveals a planet’s size, orbital period, and atmospheric composition, helping identify potentially habitable worlds.
🌠 63. The Contribution of Space Telescopes to Understanding Brown Dwarfs
Brown dwarfs are objects larger than planets but too small to sustain hydrogen fusion. Infrared telescopes detect the faint heat signatures of brown dwarfs, helping astronomers understand their formation and how they differ from stars and planets.
🌌 64. How Space Telescopes Map Galactic Halos
Galactic halos are large, spherical regions of gas and dark matter surrounding galaxies. Telescopes like Hubble and JWST measure the light from stars and gas in halos to understand their structure and the role of dark matter in galaxy formation.
🚀 65. Studying Cosmic Dust with Space Telescopes
Cosmic dust is made of tiny particles of ice, rock, and metal. Infrared telescopes detect the heat from cosmic dust, revealing the role it plays in star formation and planet formation. Studying cosmic dust helps trace the building blocks of planets.
🌙 66. The Importance of Polarimetry in Space Telescopes
Polarimetry measures the alignment of light waves. Space telescopes use polarimetry to study the magnetic fields of stars, planets, and galaxies. Understanding magnetic fields helps explain the structure and evolution of cosmic objects.
🌟 67. How Space Telescopes Observe Supermassive Black Holes
Supermassive black holes reside at the center of galaxies. X-ray telescopes detect the emissions from gas and matter falling into black holes. These observations provide insights into how black holes grow and influence their host galaxies.
🔭 68. Studying Interstellar Medium with Space Telescopes
The interstellar medium consists of gas and dust between stars. Space telescopes study the light from stars passing through this medium to measure its composition and density. Understanding the interstellar medium reveals how stars and planets form.
🌠 69. The Role of Space Telescopes in Identifying Rogue Planets
Rogue planets are planets not bound to a star, drifting through space. Infrared telescopes detect the heat from rogue planets. Studying these planets helps astronomers understand planetary formation and the dynamics of planetary systems.
🌌 70. The Search for Technosignatures with Space Telescopes
Technosignatures are signals or structures created by intelligent civilizations. Space telescopes search for unusual patterns of light, radio waves, or infrared emissions that could indicate advanced technology. Finding technosignatures would provide evidence of extraterrestrial life.
🌠 71. How Space Telescopes Detect Quasars
Quasars are extremely bright objects powered by supermassive black holes at the center of galaxies. Space telescopes like Hubble and Chandra observe the light and radiation emitted by quasars, helping astronomers study the structure of galaxies and the early universe.
🌌 72. Observing Cosmic Microwave Background with Space Telescopes
The cosmic microwave background (CMB) is the faint radiation left over from the Big Bang. Space telescopes like Planck measure this radiation, providing a snapshot of the early universe and helping scientists understand the formation of cosmic structures.
🚀 73. The Role of Adaptive Optics in Space Telescopes
Adaptive optics correct distortions caused by Earth’s atmosphere, but space telescopes avoid this issue entirely. Telescopes like Hubble and JWST use advanced optics to capture sharp, clear images of stars and galaxies, revealing structures invisible from Earth.
🌙 74. Studying Fast Radio Bursts with Space Telescopes
Fast radio bursts (FRBs) are intense pulses of radio waves from distant galaxies. Telescopes like CHIME and Hubble track these mysterious signals, helping astronomers investigate their origin and whether they are caused by neutron stars or black holes.
🌟 75. The Search for Dark Matter Using Space Telescopes
Dark matter makes up most of the universe’s mass but does not emit light. Space telescopes detect the gravitational effects of dark matter on galaxies and galaxy clusters, helping scientists map its distribution and understand its nature.
🔭 76. How Space Telescopes Study Star Clusters in Neighboring Galaxies
Star clusters in neighboring galaxies, like the Magellanic Clouds, provide insights into star formation and evolution. Telescopes like Hubble capture detailed images of these clusters, revealing their size, composition, and lifecycle.
🌠 77. Detecting Cosmic Rays with Space Telescopes
Cosmic rays are high-energy particles from outer space. Space telescopes like AMS-02 measure cosmic rays, revealing their energy levels and origins. Studying cosmic rays helps scientists understand high-energy processes in the universe.
🌌 78. Studying the Evolution of Galaxies with Space Telescopes
Space telescopes observe galaxies at different distances, effectively looking back in time. This allows astronomers to see how galaxies formed, merged, and evolved over billions of years, revealing the cosmic history of star formation.
🚀 79. How Space Telescopes Map Dark Energy
Dark energy is the mysterious force causing the accelerated expansion of the universe. Space telescopes like Euclid map the distribution of galaxies and measure their movement, helping scientists understand the nature of dark energy.
🌙 80. The Contribution of Space Telescopes to Studying White Dwarfs
White dwarfs are the remnants of stars that have exhausted their nuclear fuel. Telescopes like Hubble and Gaia study the brightness and composition of white dwarfs, revealing the final stages of stellar evolution and the fate of stars like our Sun.
🌟 81. Monitoring Space Weather with Space Telescopes
Space weather, caused by solar flares and coronal mass ejections, can disrupt communications and power grids on Earth. Telescopes like SOHO monitor the Sun’s activity, providing early warnings and helping to mitigate the effects of space weather.
🔭 82. Studying Starburst Galaxies with Space Telescopes
Starburst galaxies experience intense periods of star formation. Space telescopes like Spitzer and Hubble observe the infrared and ultraviolet light from these galaxies, helping astronomers understand what triggers rapid star formation.
🌠 83. The Importance of Multi-Wavelength Observations in Space Telescopes
Different types of light (visible, infrared, X-ray) reveal different features of celestial objects. Space telescopes like Hubble (visible), Chandra (X-ray), and JWST (infrared) combine data to create a complete picture of stars, galaxies, and nebulae.
🌌 84. Studying Protoplanetary Disks with Space Telescopes
Protoplanetary disks are rings of gas and dust around young stars where planets form. Infrared telescopes like JWST detect the heat from these disks, revealing how planets and moons emerge from cosmic material.
🚀 85. Using Space Telescopes to Study Pulsars
Pulsars are rapidly spinning neutron stars that emit beams of electromagnetic radiation. X-ray telescopes like Chandra detect these emissions, helping astronomers measure the mass, rotation, and magnetic fields of pulsars.
🌙 86. How Space Telescopes Study Intergalactic Medium
The intergalactic medium consists of the gas and plasma between galaxies. Space telescopes study the absorption of light from distant quasars by the intergalactic medium, helping scientists understand the large-scale structure of the universe.
🌟 87. Studying Superclusters of Galaxies with Space Telescopes
Superclusters are massive groups of galaxy clusters. Space telescopes measure the movement and distribution of galaxies within superclusters, providing insights into the role of gravity and dark matter in large-scale cosmic structures.
🔭 88. Observing Planetary Nebulae in Other Galaxies
Planetary nebulae are shells of gas ejected by dying stars. Space telescopes detect the light from these nebulae in other galaxies, revealing the chemical composition of stars and the life cycle of galaxies.
🌠 89. How Space Telescopes Monitor Solar Activity
Telescopes like SOHO and STEREO monitor the Sun’s magnetic field, sunspots, and flares. These observations help scientists predict solar storms and understand the Sun’s impact on Earth’s climate and technology.
🌌 90. Studying Interstellar Dust with Space Telescopes
Interstellar dust scatters and absorbs starlight, affecting astronomical observations. Infrared telescopes detect the heat from interstellar dust, helping astronomers measure its composition and role in star formation.
🚀 91. How Space Telescopes Identify Hypervelocity Stars
Hypervelocity stars are ejected from galaxies at extremely high speeds. Space telescopes measure their movement and trajectory, helping scientists understand the gravitational forces acting on them.
🌙 92. Observing Cosmic Filaments with Space Telescopes
Cosmic filaments are vast threads of galaxies and dark matter connecting clusters. Space telescopes map these structures using gravitational lensing and galaxy distribution, helping to define the cosmic web.
🌟 93. Studying X-Ray Binaries with Space Telescopes
X-ray binaries are systems where a black hole or neutron star pulls material from a companion star, emitting X-rays. Telescopes like Chandra detect these emissions, helping scientists understand the properties of compact objects.
🔭 94. How Space Telescopes Track Tidal Disruption Events
Tidal disruption events occur when a star gets torn apart by a black hole’s gravity. Space telescopes detect the burst of light from these events, revealing the extreme forces near black holes.
🌠 95. Studying Star Formation in Dwarf Galaxies
Dwarf galaxies are small, faint galaxies with active star formation. Space telescopes observe the bright young stars in these galaxies, revealing the conditions necessary for star birth.
🌌 96. How Space Telescopes Detect Merging Black Holes
When two black holes merge, they produce gravitational waves and light. Telescopes like Hubble detect the electromagnetic signals from these events, helping astronomers study the behavior of black holes.
🚀 97. Observing Magnetic Fields in Galaxies with Space Telescopes
Magnetic fields influence the motion of gas and stars in galaxies. Telescopes use polarimetry to map these fields, revealing their role in galaxy formation and star birth.
🌙 98. Studying Galactic Winds with Space Telescopes
Galactic winds are outflows of gas from star-forming galaxies. Space telescopes measure the speed and composition of these winds, showing how galaxies regulate their star formation.
🌟 99. Detecting the Light from the First Stars with Space Telescopes
The first stars formed after the Big Bang. Infrared telescopes like JWST seek the faint light from these stars, revealing the early stages of cosmic evolution.
🔭 100. How Space Telescopes Detect Rings Around Exoplanets
Space telescopes measure the light blocked by rings around exoplanets, similar to Saturn’s rings. These discoveries help astronomers understand the formation of planetary systems.
🌠 101. Tracking Interstellar Visitors with Space Telescopes
Interstellar objects like ‘Oumuamua pass through the solar system. Space telescopes track their speed and trajectory, providing clues about their origin and composition.