Friday, March 27, 2009
Earth Hour!
Earth Hour - Show the world you care! Turn off your lights from 8:30 - 9:30 on 3/28 (Saturday night). http://www.earthhour.org/
Thursday, March 19, 2009
Spring is coming!
Spring comes tomorrow (Friday) morning. What is the name of this day? What happens on this day?
Wednesday, March 18, 2009
Up Up in the Sky...It's a ......
ASTEROID BUZZES EARTH: Newly-discovered asteroid 2009 FH is flying past Earth tonight only 85,000 km (0.00057 AU) away. That's a little more than twice the height of a geosynchronous communications satellite. Experienced amateur astronomers in North America can photograph the 20-meter-wide space rock racing through the constellation Gemini after sunset on March 17th. It should be about as bright as a 14th magnitude star. Please visit http://spaceweather.com for an ephemeris and updates.
This is the second time in March that an asteroid has flown so close to Earth. On March 2nd, 2009 DD45 passed by only 72,000 km away. Measuring some tens of meters in diameter, 2009 DD45 and 2009 FH are approximately Tunguska-class objects, meaning they pose no global threat but could cause local damage if they actually hit Earth. In years past, asteroids of this size often passed unnoticed, but recent improvements in asteroid surveys have resulted in growing numbers of space rocks caught in the act of near-Earth flybys.
This is the second time in March that an asteroid has flown so close to Earth. On March 2nd, 2009 DD45 passed by only 72,000 km away. Measuring some tens of meters in diameter, 2009 DD45 and 2009 FH are approximately Tunguska-class objects, meaning they pose no global threat but could cause local damage if they actually hit Earth. In years past, asteroids of this size often passed unnoticed, but recent improvements in asteroid surveys have resulted in growing numbers of space rocks caught in the act of near-Earth flybys.
Thursday, March 12, 2009
The Sky is Falling, The Sky is Falling!
Check out this story and web site. Let me know what you think and if you see any pieces!
SATELLITE DEBRIS UPDATE: The first catalogued fragments of shattered satellite Cosmos 2251 are about to reenter Earth's atmosphere. According to US Strategic Command tracking data, reentries will occur on March 12th, 28th and 30th, followed by more in April. Radar cross sections are not available for all of the reentering pieces; they are probably centimeter-class fragments that pose no threat to people on the ground. Visit http://spaceweather.com for more information.
SATELLITE DEBRIS UPDATE: The first catalogued fragments of shattered satellite Cosmos 2251 are about to reenter Earth's atmosphere. According to US Strategic Command tracking data, reentries will occur on March 12th, 28th and 30th, followed by more in April. Radar cross sections are not available for all of the reentering pieces; they are probably centimeter-class fragments that pose no threat to people on the ground. Visit http://spaceweather.com for more information.
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