Comets
The Risk of a Comet Strike is Low
Although astronomers have discovered plenty of comets, they've always thought it was just a fraction (less than 3%) of the…
Tempel 1’s Ingredients
When Deep Impact excavated a crater in Comet Tempel 1, it released a spew of material that has existed since…
Surprising Insights Into Comet Tempel 1
Even though Deep Impact smashed into Comet Tempel 1 several months ago, scientists are still analyzing the data gathered before…
SOHO Gets Its 1,000th Comet
The most successful comet hunter in history is actually the ESA/NASA SOHO spacecraft, which spends its time gazing at the…
Deep Impact’s Plume Was Bigger Than Expected
When Deep Impact's impactor slammed into Comet Tempel 1 on July 4, 2005, it released a tremendous cloud of fine…
How Much Material Was Blasted Off By Deep Impact?
One of the instruments tuned into Deep Impact is NASA's Swift satellite, normally designed to detect and analyze gamma ray…
Gemini Sees Rocky Material on Tempel 1
As Deep Impact's impactor probe smashed into Comet Tempel 1 this week, every available observatory, on land and in space…
Swift’s Take on Deep Impact
Scientists monitoring NASA's Swift satellite had a good view of Deep Impact's collision with Comet Tempel 1. Although the space-based…
Deep Impact Made a Bright Flash
When Deep Impact's impactor spacecraft smashed into Comet Tempel 1, the two objects collided at a speed of 10 km/s…
Deep Impact Smashes Into Tempel 1
NASA's Deep Impact mission completed its primary goal July 4th, when its impactor spacecraft smashed into Comet Tempel 1. NASA…