About
Astronomy, a natural science, is the study of celestial objects (such as stars, galaxies, planets, moons, asteroids, comets and nebulae) and processes (such as supernovae explosions, gamma ray bursts, and cosmic microwave background radiation), the physics, chemistry, and evolution of such objects and processes, and more generally all phenomena that originate outside the atmosphere of Earth. A related but distinct subject, physical cosmology, is concerned with studying the Universe as a whole.
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Dwarf Planet Pluto Coffee Mug
Sale Price $14.33. Original Price $16.85. Comp. value
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Webb's First Deep Field Unveiled Postcard
Sale Price $1.54. Original Price $1.71. Comp. value
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The Earth seen from Apollo 17 aka The Blue Marble Pinback Button
Sale Price $4.14. Original Price $4.60. Comp. value
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Infrared Image of the Milky Way Galaxy Mouse Pad
Sale Price $16.34. Original Price $18.15. Comp. value
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Infrared Image of the Milky Way Galaxy Coffee Mug
Sale Price $15.35. Original Price $18.05. Comp. value
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Planet Saturn in Front of the Sun
Sale Price $2.37. Original Price $3.38. Comp. value
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Glittering Star Cluster and Interstellar Gas Cloud Mouse Pad
Sale Price $16.34. Original Price $18.15. Comp. value
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Blue Marble Planet Earth North America Mexico Tile
Sale Price $13.41. Original Price $14.90. Comp. value
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Voyager 1 and 2 Golden Record Sounds of Earth Square Sticker
Sale Price $8.08. Original Price $10.10. Comp. value
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Swirling Clouds of Planet Jupiter Close Up Canvas Print
Sale Price $215.10. Original Price $239.00. Comp. value
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Voyager 1 and 2 Golden Record Sounds of Earth Pinback Button
Sale Price $4.14. Original Price $4.60. Comp. value
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The Earth seen from Apollo 17 aka The Blue Marble Postcard
Sale Price $2.38. Original Price $2.64. Comp. value
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Andromeda Galaxy taken with hydrogen alpha filter Coffee Mug
Sale Price $15.35. Original Price $18.05. Comp. value
Dwarf Planet Pluto Coffee Mug
Sale Price $14.33. Original Price $16.85. Comp. value
Pillars of Creation Eagle Nebula M16 NGC 6611 JWT Canvas Print
Sale Price $297.00. Original Price $330.00. Comp. value
First Photograph of a Earthrise Taken by Apollo 8 Keychain
Sale Price $9.77. Original Price $10.85. Comp. value
The Earth seen from Apollo 17 aka The Blue Marble Pinback Button
Sale Price $4.14. Original Price $4.60. Comp. value
Webb's First Deep Field Unveiled Postcard
Sale Price $1.54. Original Price $1.71. Comp. value
Infrared Image of the Milky Way Galaxy Coffee Mug
Sale Price $15.35. Original Price $18.05. Comp. value
Swirling Clouds of Planet Jupiter Close Up Canvas Print
Sale Price $215.10. Original Price $239.00. Comp. value
North Temperate Belt Jupiter Swirling Clouds Poster
Sale Price $132.30. Original Price $147.00. Comp. value
Swirling Clouds of Planet Jupiter Close Up Poster
Sale Price $132.30. Original Price $147.00. Comp. value
Swirling Blue Clouds of Planet Jupiter Juno Cam Poster
Sale Price $181.80. Original Price $202.00. Comp. value
Hubble Space Telescope Probes the Early Universe Poster
Sale Price $54.41. Original Price $60.45. Comp. value
