In 1961, the US astrophysicist Frank Drake, who passed away on Sept. 2 at the age of 92, came up with an equation to estimate the number of intelligent civilizations in the Milky Way right now.
A geologist explains what the "doorway" on Mars really is and why it's so tempting to see recognizable shapes on other worlds.
It’s not often that the sudden appearance of a new impact crater on the Moon can be predicted, but it’s going to happen on March 4, when a derelict SpaceX Falcon 9 rocket will crash into it.
The BepiColombo spacecraft – a joint project by the European and Japanese space agencies – swung by its destination planet Mercury in the early hours of Oct. 2.
The IAU's achievements during its first few decades include resolving contradictory sets of names given to features on the Moon and Mars by rival astronomers during the previous few centuries.
The dream of a human habitat in orbit about the moon came a step closer on September 27, when NASA and the Russian space agency (Roscosmos) signed up to a common vision for future human exploration.
Science fiction movies about aliens threatening the Earth routinely ascribe them the motive of coming here to steal our resources, most often our water.