This is part of a series of articles written by members of the Westfield High School Space and Astronomy Club. Their mission is to share their enthusiasm for space and astronomical events with the ...

On Aug. 24, 2006, the International Astronomical Union voted to strictly define a planet, which ultimately downgraded Pluto from the ninth planet from the sun to a dwarf planet — causing controversy ...

The spotlight is bright enough to thaw even Pluto. Well, not quite, but the tiny, icy world is getting front-page, prime-time attention for its first visit by a spacecraft — NASA’s New Horizons.

It’s traveled more than 3.6 billion miles to get there, and it will only stay a few hours, but a small space probe is expected to revolutionize the way we look at Pluto. NASA’s New Horizons spacecraft ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. SAN DIEGO — NASA said its New Horizons ...

NASA’sNew Horizons spacecraft has delivered extraordinary video footage showing towering ice mountains on Pluto’s moon Nix.

When it comes to landmark achievements in space exploration, today will be a date for the history books as the day humanity reached Pluto for the first time. If everything goes according to plan, a ...