A $74 million Indian spacecraft entered orbit around Mars today after an almost yearlong voyage, and for 11 percent the cost of the U.S.’s Maven probe.

India's maiden mission to Mars has "entered the Martian neighbourhood", its space agency says, 48 hours before its planned arrival in orbit.

A NASA spacecraft that aims to study the upper atmosphere of Mars and reveal how its climate changed over time is poised to begin orbiting the Red Planet.

August 2014 was marginally the warmest August worldwide since records began 130 years ago, according to new data from Nasa’s Goddard Institute for Space Studies.

Last month was the hottest August on record globally, adding to a run of months with exceptionally warm conditions.

Australia's hottest year of 2013 started with a heatwave that caused widespread bush fires.

Our atmosphere "contains an unexpectedly large amount of an ozone-depleting compound from an unknown source, decades after the compound was banned worldwide," reports a NASA study out this week.

Over a 14-year period, the Colorado River basin in the U.S. has lost nearly 65 cubic km of freshwater, almost double the volume of the nation's largest reservoir, Nevada's Lake Mead.

The mission of Aura, which is Latin for breeze, centers on obtaining measurements of ozone, aerosols and key gases throughout the atmosphere.

An unmanned Delta 2 rocket blasted off from California on Wednesday, carrying a NASA science satellite to survey where carbon dioxide, a greenhouse gas tied to climate change, is moving into and ou