Mercury: Size, distance from the Sun, orbit | Astronomy.com
WEBOct 20, 2023 · Mercury, the closest planet to the Sun, takes only 88 days to orbit the Sun. NASA image of Mercury. Size: Mercury is about 3,032 miles (4,880 kilometers) across. That makes it the smallest planet ...
Jupiter: Size, distance from the Sun, orbit | Astronomy.com
WEBApr 19, 2024 · Size: Eleven Earths would fit side by side across the face of Jupiter. It is the biggest planet in the solar system, and it has a diameter of 89,000 miles (143,000 kilometers). Distance from the ...
Could you survive falling into a black hole? It depends.
WEBMay 13, 2024 · A stellar-mass black hole would quickly tear you apart. But a person encountering a supermassive black hole could survive for hours. A visualization of the black hole at the center of the Milky ...
What’s the difference between dark matter and dark energy?
WEBMar 3, 2020 · Dark matter. In the 1930s, Swiss-born astronomer Fritz Zwicky studied images of the roughly 1,000 galaxies that make up the Coma Cluster — and he spotted something funny about their behavior ...
The Beginning to the End of the Universe: The Big Crunch vs. The …
WEBJan 31, 2021 · The Big Freeze. The Beginning to the End of the Universe: The Big Crunch vs. The Big Freeze. Astronomers once thought the universe could collapse in a Big Crunch. Now most agree it will end with a ...
Everything you need to know about the Moon | Astronomy.com
WEBSep 7, 2023 · The Moon’s average distance from Earth is about 238,900 miles (384,400 km). However, this distance is not constant, as the Moon follows an elliptical orbit around Earth. When the Moon is closest ...
What colors are the planets in our solar system? And why are they …
WEBOct 21, 2021 · NASA/JPL. The planets of the solar system are varied in their appearance. Mercury is slate gray while Venus is pearly white, Earth a vibrant blue, and Mars a dusky red. Even the gas giants are ...
Top 10 space stories of 2019 | Astronomy.com - Astronomy …
WEBFeb 6, 2020 · A large cold spot (circled) — bigger than astronomers expect — also appears in the sky. ESA and the Planck Collaboration. 9: The cosmic cold spot conundrum continues. The earliest snapshot of ...
How do black holes form? - Astronomy Magazine
WEBFeb 24, 2020 · The most well-understood black holes are created when a massive star reaches the end of its life and implodes, collapsing in on itself. A black hole takes up zero space, but does have mass ...
Astronomy Magazine: Space News, Observing, Planets, Galaxies
WEBAstronomy.com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, black holes ...