Asteroids, comets and Kuiper belt are bodies smaller than planets that orbit the sun. Asteroids are composed of metals and rock, whereas comets also contain ice and dust. The Kuiper belt is a ...

本集内容. Updating London's Victorian sewage system 升级改造伦敦维多利亚时代的排水系统. 文字稿. This is London, but it's a story repeated across the ...

Binary asteroid systems are widespread throughout our inner solar system. For decades, the standard paradigm held that many of them form when a rapidly spinning primary asteroid casts off material, ...

If you receive JavaScript required to sign in error message when using Skype, OneDrive, Teams or any other program, you need to turn on or enable JavaScript in your ...

After checking its trajectory against at giant database of objects maintained by the Minor Planet Center in Cambridge, Mass., ...

On 13 April 2029, the asteroid 99942 Apophis will pass safely at a distance of about 32,000 kilometers above Earth's surface, within the geostationary orbit, posing no threat to the planet. This ...

Scientists now believe life may be found on the notoriously inhospitable planet of Venus – but they believe it will have come ...

如果你现在放眼欧洲西部，就会发现很难找到能够避开高温的地区。 European farmers are still counting the cost of last year's drought, which saw plummetin ...

The Earth formed over 4.6 billion years ago out of a mixture of dust and gas around the young sun. It grew larger thanks to countless collisions between dust particles, asteroids, and other growing ...