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An astronomer is a scientist in the field of astronomy who focuses on a specific question or field outside the scope of Earth. Astronomers observe astronomical objects , such as stars , planets , moons , comets and galaxies – in either observational (by analyzing the data) or theoretical astronomy .
Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets.
From a bar in the clouds to finding more water from the Moon, outer space is constantly surprising us. The post 24 Astronomy Facts You Never Learned in School appeared first on Reader's Digest.
The Earth's outer core is liquid, but it is liquid metal, not rock. [257] The Amazon rainforest does not provide 20% of Earth's oxygen. This is a misinterpretation of a 2010 study which found that approximately 34% of photosynthesis by terrestrial plants occurs in tropical rainforests (so the Amazon rainforest would account for approximately ...
By Will Dunham. WASHINGTON (Reuters) - Meteorites - rocks that fall to Earth from space - have pelted our planet from its birth about 4.5 billion years ago to today, often causing scant damage but ...
The post 24 Astronomy Facts You Never Learned in School appeared first on Reader's Digest. From a bar in the clouds to finding more water from the Moon, outer space is constantly surprising us ...
Reaching Jupiter from Earth requires a delta-v of 9.2 km/s, [42] which is comparable to the 9.7 km/s delta-v needed to reach low Earth orbit. [43] Fortunately, gravity assists through planetary flybys can be used to reduce the energy required at launch to reach Jupiter, albeit at the cost of a significantly longer flight duration.
Astronomers Found the Ancient Light Source That Literally Turned On the Universe. Darren Orf. July 18, 2024 at 8:00 AM ... it required the $10 billion dollar James Webb Space Telescope (JWST).