3 Questions: Andy Puckett, Astrophysicist

Discovery-News.com: Astrophysicist Andy Puckett explores the universe, especially undiscovered asteroids that could one day smack into our planet. Jorge Ribas gets the odds on our survival.

For more space news stories, check out http://dsc.discovery.com/space

Category:

Science & Technology

Tags:

• space
• physics
• andy
• puckett
• question
• nasa
• goddard
• universe
• star
• asteroid
• crash
• earth
• discovery
• jorge
• ribas

[jqs1943]

Did you know that interstellar space is full of debris from the disintegration of worlds in the form of asteroids and other subordiante materials?

A world disintegrates when its gravitational force field diminishes in strength and subsides beneath the planet's crust, at first producing asteroid rings around the world, and later on a huge field of debris.In most cases asteroids don't impact worlds, but worlds impact asteroids. Earth's solar orbital trajectorial speed is approximately 66,000 mph

[PatrickArgentina]

I bought Deep Impact some weeks ago.

[narsil1984]

Ok, here I stand and Ive learnt something I didnt know yet :)

[TheMagician17]

You should have interviewed Phil Plait. He just wrote a book called Death from the Skies which got released recently, that specifically focuses on threats in space that could destroy Earth, as the name implies.

[BattleBrook]

nice

[lokasoo]

Awesome vid! First