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Don't miss out on the headlines from Space. Followed categories will be added to My News. Space exploration is ramping up: 2014 was the year we landed on a comet and found a host of new worlds ...

A kindergartener in 2005 and a kindergartener in 2006 would have learned very different facts about the number of planets in the solar system. 2006, of course, was the year Pluto was reclassified as a ...

The word “planet” came from the ancient Greek words that mean “wandering star.” That makes sense, because for thousands of years, people have watched planets change position in the night sky – unlike ...

(Flickr-royalty free image collection) Two hundred years ago, there were more than 20 planets in our solar system! Imagine trying to learn that many in grade school compared to the nine, no wait, ...

Animation made from still images of Ceres taken by Dawn on Feb. 4, 2015. Credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA/PSI New images from NASA's Dawn spacecraft reveal ...

Add articles to your saved list and come back to them any time. PLUTO was looking more and more like a goner on Tuesday as astronomers meeting in Prague continued to debate the definition of a planet.

TWO lonely but hip robots will take us into our solar system’s darkest corners this year, and they’re already giving us tantalising Tweets of what is to come. Space exploration is ramping up: 2014 was ...