Space News - Latest Space and Astronomy News | Space
网页1 天前 · Space.com is your source for the latest astronomy news and space discoveries, live coverage of space flights and the science of space travel. | Space
Space.com: NASA, Space Exploration and Astronomy News
网页2 天之前 · Get the latest space exploration, innovation and astronomy news. Space.com celebrates humanity's ongoing expansion across the final frontier.
Perseid meteor shower 2024: when, where and how to see it
网页2024年8月12日 · Perseid meteor shower: Quick facts. — When: July 14 to August 24. — Peak: Aug. 11-12. — Comet of origin: 109P/Swift-Tuttle. — Zenithal Hourly Rate (ZHR): 100. (The number of meteors a ...
Earth's sun: Facts about the sun's age, size and history
网页2021年6月9日 · The sun is one of more than 100 billion stars in the Milky Way. It orbits some 25,000 light-years from the galactic core, completing a revolution once every 250 million years or so. The sun is ...
How far is the moon from Earth? | Space
网页2022年11月18日 · When the moon reaches its shortest distance to Earth — known as perigee — it is about 226,000 miles (363,300 km) away. If perigee coincides with a full moon phase, this is generally called a ...
Black holes: Everything you need to know | Space
网页2022年5月6日 · Black holes are some of the strangest and most fascinating objects in space. They're extremely dense, with such strong gravitational attraction that not even light can escape their grasp. The ...
Starlink satellite train — how to see and track it | Space
网页2024年7月24日 · The Starlink satellite train is usually visible shortly after the satellites have been deployed when they are at their lowest orbit. Starlink satellites travel very fast and complete one orbit of ...
Stars: Facts about stellar formation, history and classification
网页2022年9月26日 · Stars are typically classified by their spectrum in what is known as the Morgan-Keenan or MK system, according to the European Southern Observatory. There are eight spectral classes, each ...
Mercury: A complete guide to the closest planet to the sun
网页2023年6月9日 · Mercury speeds around the sun every 88 Earth days, traveling through space at nearly 112,000 mph (180,000 km/h), faster than any other planet. Its oval-shaped orbit is highly elliptical, taking ...
What is the temperature on Mars? | Space
网页2022年2月25日 · On average, the temperature on Mars is about minus 80 degrees F (minus 60 degrees Celsius) according to NASA. In winter, near the poles, temperatures can get down to minus 195 degrees F (minus 125 ...