View Full Version : Deathwatch on a Red Giant Star

2007-Jun-04, 06:52 PM
When a star like our Sun reaches the end of its life - a fate we'll face in 5 billion years - it swells up immensely, becoming a red giant star. Its size expands until it engulfs everything within the Earth's orbit, and begins to pulsate, expending and contracting in regular intervals. ...

Read the full blog entry (http://www.universetoday.com/2007/06/04/deathwatch-on-a-red-giant-star/)

2007-Jun-06, 05:24 AM
If anyone has a subscription to Astronomy mag. they just had a great story about this in this months issue.

The sun, in about 5 billion years, will swell between the orbit of mercury and venus and boil every last bit of water off earth. life will either have to move to a new planet or we would have to move underground because life on the surface of the planet would be imposible.

Not that it wouldent be cool to live undergound but you wouldent be able to check out the night sky.