Solar flare - one of the biggest in four years - shot from the sun on Sunday. Scientists predict that a solar flare of this size - and traveling toward Earth - could produce a dramatic light show. Did it?
New zodiac signs 2011: Thanks to a wobble in the earth's axis, the astrological positions calculated some 2,000 years ago no longer apply. And even back then it was a big load of nonsense.
New calculations indicate that Pluto might be the largest object in the outer solar system. Does it now deserve to be called a planet again?
Sunday night's full moon qualifies as a 'blue moon,' but it's not the second full moon in November. So, why is it a blue moon?
An extended daylight savings time will mean that Venus will shine bright in the eastern sky in the morning, likely prompting a bevy of UFO sightings.
The Earth often passes through the trail crumbs left behind by comets.
Mars hoax e-mails have been passed on to countless people who haven't been able to resist forwarding it to their entire address book. In some cases, the message has been turned into a full-blown PowerPoint presentation.
The National Research Council's once-a-decade study, released Friday, proposes the top priorities for US space science during the coming decade. NASA uses it as a blueprint.
Perseid meteor shower promises to be one of the flashiest meteor displays of the year, if you can stay awake to watch them.
Solar eclipse on Sunday will be visible only on Easter Island in the South Pacific.