Browse by Tags

All Tags » Solar System » Asteroids   (RSS)
27 February 2010
Small Asteroids, Bread Flour, and a Dutch Physicist's 150-year Old Theory
No, it's not the Universe Puzzle No. 3; rather, it's an intriguing result from recent work into the strange shapes and composition of small asteroids. Images sent back from space missions suggest that smaller asteroids are not pristine chunks of rock, but are instead covered in rubble that ranges in size from meter-sized boulders to flour-like [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments  
26 November 2009
Comets Posing as Asteroids (or is the the other way around?)
Asteroids are rocky bodies which belong between Mars and Jupiter. Comets are icy bodies that belong way out beyond Pluto. So what are comet-like objects doing in the asteroid belt? (...)Read the rest of Comets Posing as Asteroids (or is the the other way around?) (679 words) © jvois for Universe Today, 2009. | Permalink | No comment | Add [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments  
25 November 2009
Jupiter – Our Silent Guardian?
We live in a cosmic shooting gallery. In Phil Plait's Death From the Skies, he lays out the dangers of a massive impact: destructive shockwaves, tsunamis, flash fires, atmospheric darkening…. The scenario isn't pretty should a big one come our way. Fortunately, we may have a silent guardian: Jupiter. (...)Read the rest of Jupiter – Our [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments  
21 July 2009
Heat-Shocked Diamonds Provide New Clue of Horse-Killing Impact
Archeologists have been divided about whether an extraterrestiral impact blasted North America about 12,900 years ago, wreaking havoc on Earth's surface and sending scores of species — including a pygmy mammoth and the horse — into oblivion. New clues from California's Channel Islands should put any doubt to rest, says an international team of researchers. (...)Read the [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments  
19 March 2009
The Sun as a White Dwarf Star
What will happen to all the inner planets, dwarf planets, gas giants and asteroids in the Solar System when the Sun turns into a white dwarf? This question is currently being pondered by a NASA researcher who is building a model of how our Solar System might evolve as our Sun loses mass, violently turning [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments  
25 February 2009
Jupiter, Saturn Plowed Through Asteroids, Study Says
  When Mars and Jupiter migrated to their present orbits around 4 billion years ago, they left scars in the asteroid belt that are still visible today. The evidence is unveiled in a new paper in this week's issue of the journal Nature, by planetary scientists David Minton and Renu Malhotra from the University of Arizona in Tucson. [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments