Understanding the phases of the Moon | Astronomy.com
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 ...
Jupiter: Size, distance from the Sun, orbit | Astronomy.com
2024年4月19日 · 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 ...
Astronomy Magazine: Space News, Observing, Planets, Galaxies
Astronomy.com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, black holes ...
Black holes, explained by an astrophysicist - Astronomy Magazine
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 ...
Earth's future: How the world might end | Astronomy Magazine
2023年10月19日 · Earth’s oceans will boil. Regardless of other factors, the Sun’s increasing radiation will alter our planet in a fundamental way over the coming few hundred million years. In 1.5 billion years ...
The science behind the Big Bang theory | Astronomy.com
2023年12月18日 · 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 ...
Planets 101: What they are and how they form | Astronomy.com
2023年10月18日 · Planets arise from the remnants inside a protoplanetary disk that encircles a nascent star. Dust and gas within such disks slowly sticks together, forming the building blocks of planets, known as ...
Earth facts: Size, distance from the Sun, orbit | Astronomy.com
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 ...
The Sun: Facts, size, and fate of Earth’s blazing star
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 ...
Mercury: Size, distance from the Sun, orbit | Astronomy.com
2023年10月20日 · Size: Mercury is about 3,032 miles (4,880 kilometers) across.That makes it the smallest planet in the solar system. In fact, Mercury is just a little larger than Earth’s Moon.Distance from the ...