On this date, Jan. 6, 1969, the Soviet Union launched the Venera 5 spacecraft, which was part of an ongoing mission to explore Earth’s sister planet, Venus. Venera 5 successfully entered Venus’ ...

In Earth's upper atmosphere, a fast-moving band of air called the jet stream blows with winds of more than 275 miles (442 km) ...

Eris was discovered. It was considered the largest known dwarf planet in the solar system until a year later when Pluto was downgraded from being a planet.

revealing that it possesses a comet-like tail of gas extending approximately 5,63,000 kilometers. This tail is formed as the planet, a hot Jupiter located 160 light-years from Earth, loses its ...

Six planets will form a rare planetary alignment in the night sky on Jan. 21; here is everything you need to know about the ...