Astronomy Magazine: Space News, Observing, Planets, Galaxies
WEB2 days ago · Astronomy.com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, black holes ...
Understanding the phases of the Moon | Astronomy.com
WEBAug 30, 2023 · There are eight distinct phases the Moon goes through. Beginning with New Moon, they are: New Moon: The New Moon phase marks the beginning of the lunar cycle. During this phase, the Moon is ...
2024 Full Moon calendar: When to see the Full Moon and phases
WEB2 days ago · Dec. 15. Dec. 22. Dec. 30. The next Full Moon in 2024 is at 10:34 p.m. EDT on Tuesday, Sept. 17, and is called the Corn Moon. Much of the world will also see a partial lunar eclipse.
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 ...
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 ...
The science behind the Big Bang theory | Astronomy.com
WEBDec 18, 2023 · According to the theories of physics, one second after the Big Bang, the heat of the universe caused atoms to collide with enough force to create a ten billion degree soup of neutrons, protons ...
How Did the Big Bang Happen? | Astronomy.com
WEBJul 1, 2019 · The universe cooled rapidly as it blew outward, however, and by 10–35 second after the Big Bang, the epoch of inflation occurred, enlarging the universe by a factor of 1050 in only 10–34 ...
Earth facts: Size, distance from the Sun, orbit | Astronomy.com
WEBOct 20, 2023 · Earth is the third planet from the Sun and takes 23 hours, 56 minutes to spin on its axis one time. Size: Earth has a diameter of 7,926 miles (12,756 kilometers). Distance from the Sun: Earth is ...
A brief history of time: What is it and how do we define it?
WEBJan 6, 2022 · In October 1884, delegates from around the world gathered in Washington, D.C., at the International Meridian Conference. The goal was to determine “a common zero of longitude.”. Each of the 24 ...
Speed of light: How fast light travels, explained simply and clearly
WEBJan 23, 2024 · On one hand, the speed of light is just a number: 299,792,458 meters per second. And on the other, it’s one of the most important constants that appears in nature and defines the relationship of ...