News | Astronomy.com
网页Product Recommendations. The world's best-selling astronomy magazine offers you the most exciting, visually stunning, and timely coverage of the heavens above. Each issue includes expert science ...
2024 Full Moon calendar: When to see the Full Moon and phases
网页1 天前 · 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.
The Sun: Facts, size, and fate of Earth’s blazing star
网页2023年10月18日 · With a diameter of some 864,000 miles (1.39 million km), the Sun dwarfs any other object in our solar system. In fact, you could fit about 1.3 million Earths inside it. However, despite its ...
Speed of light: How fast light travels, explained simply and clearly
网页2024年1月23日 · 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 ...
Understanding the phases of the Moon | Astronomy.com
网页2023年8月30日 · 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 ...
Earth facts: Size, distance from the Sun, orbit | Astronomy.com
网页2023年10月20日 · 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 ...
Everything you need to know about the Moon | Astronomy.com
网页2023年9月7日 · 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 ...
How Did the Big Bang Happen? | Astronomy.com
网页2019年7月1日 · 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 ...
Black holes, explained by an astrophysicist - Astronomy Magazine
网页2023年12月11日 · A black hole is a region of universe where gravity is so outrageously strong that nothing, not even light, can escape. Once something enters a black hole by crossing an invisible boundary known as ...
Venus: Size, distance from the Sun, orbit | Astronomy.com
网页2023年10月20日 · Size: Venus is about 7,521 miles (12,104 kilometers) in diameter. Distance from the Sun: The second planet from our star has an average distance from the Sun of 67 million miles (108 million km ...