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Starlink satellites: Facts, tracking and impact on astronomy
2024年9月27日 · SpaceX's first 60 Starlink internet communications satellites are released all at once in this animation of images taken during the successful May 23, 2019 launch from Cape Canaveral Air Force ...
What is the Big Bang Theory? | Space
2023年7月26日 · Hubble images show the far-distant galaxy GN-z11 as it appeared shortly after the Big Bang. (Image credit: NASA) This all happened within just the first second after the universe began, when the ...
Solar system planets, order and formation — a guide | Space
2024年8月27日 · The Oort Cloud is considered to mark the edge of the solar system as, beyond that the gravity of the stars begin to dominate that of the sun, says NASA.The inner boundary of the main region of the ...
What is the temperature on Mars? | Space
2022年2月25日 · NASA graphic showing the average temperatures of planets in the solar system. (Image credit: NASA/Lunar and Planetary Institute) Mars's atmosphere is about 100 times thinner than Earth's. Without ...
The moon — A complete guide to Earth's companion | Space
2023年5月23日 · The moon likely has a very small solid iron core. (Image credit: Karl Tate, SPACE.com) The moon's rocky mantle is about 825 miles (1,330 km) thick and made up of dense rocks rich in iron and ...
Earth's magnetic field: Explained | Space
2022年7月6日 · Earth has two sets of poles, geographic pole and magnetic poles. Earth's magnetic field can be visualized if you imagine a large bar magnet inside our planet, roughly aligned with Earth's axis.
Why is the speed of light the way it is? | Space
2020年7月16日 · Putting light to the test. The first person to realize that light does indeed have a speed at all was an astronomer by the name of Ole Romer. In the late 1600s, he was obsessed with some strange ...
Milky Way galaxy: Facts about our cosmic neighborhood | Space
2023年4月18日 · The Milky Way galaxy is our cosmic home. A barred spiral galaxy stretching 100,000 light-years across. Here we explore our galactic neighborhood in more detail.