2015년 3월 7일 토요일

EarthSky News - March 7 - How to Survive Daylight Saving Time

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March 7
How to Survive Daylight Saving Time
It begins in the United States at 2 a.m. on Sunday, March 8.
Dawn spacecraft arrived at Ceres yesterday! 
Dawn spacecraft made history - first to a dwarf planet, first to orbit two worlds beyond Earth - when it successfully slipped into orbit around Ceres yesterday.
Mars lost ocean of water to space 
Four billion years ago, a primitive ocean on Mars held more water than Earth's Arctic Ocean.  But 87 percent of Mars' ocean was lost to space.
The science of freezing rain 
What causes the dangerous winter weather element that can paralyze cities.
Use Big Dipper to find Little Dipper 
Big Dipper ascends in the northeast on March evenings. Little Dipper is always in the north, because North Star is the last star in its handle.
Try an EarthSky astronomy kit!
Great for beginners.  It'll help you learn the stars.


TODAY'S IMAGE
Moonrise over Gunnison 
The full Worm Moon rising over Gunnison, Colorado on Thursday night.
Photo by Matt Burt.

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