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.
Space News - Latest Space and Astronomy News | Space
网页2010年10月10日 · 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 Quizzes - Test Your Knowledge of the Universe | Space
网页2021年8月12日 · Test your space smarts with these online quizzes for kids and adults: featuring trivia questions about our solar system, space missions and black holes. | Space
Track the ISS: How and where to see it - Space.com
网页2024年6月27日 · The ISS zips around Earth at an average speed of 17,500 mph ( 28,000 km/h), completing 16 orbits per day. As the ISS orbits with an inclination of 51.6 degrees, if you live beyond 51.6 degrees ...
What is the biggest planet ever found? | Space
网页2023年11月27日 · The answer depends on several factors, including how you define a planet. Even so, there are a few candidates for the largest known planet. One of the largest is called ROXs 42Bb, a gas giant ...
How big is the universe? | Space
网页2022年1月28日 · Like a ship in the empty ocean, astronomers on Earth can turn their telescopes to peer 13.8 billion light-years in every direction, which puts Earth inside of an observable sphere with a radius of ...
The 10 biggest space science stories of 2021 | Space
网页2021年12月29日 · 5. James Webb Space Telescope flies into space. NASA's James Webb Space Telescope separates from its Ariane 5 rocket with the bright blue Earth in the background in this view captured after its ...
Our expanding universe: Age, history & other facts | Space
网页2022年3月15日 · The globular cluster NGC 6397 contains around 400,000 stars and is located about 7,200 light years away in the southern constellation Ara. With an estimated age of 13.5 billion years, it is likely ...
Planet Earth: Everything you need to know - Space.com
网页2023年4月12日 · Planet Earth's orbit around the sun. While Earth orbits the sun, the planet is simultaneously spinning around an imaginary line called an axis that runs through the core, from the North Pole to ...
How cold is space? Physics behind the universe's temperature
网页2022年7月6日 · In fact, the difference is so insignificant that the change between a hot spot and a cold spot is just 0.000018 K. This is known as the cosmic microwave background (CMB) and it has a uniform ...