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Did life begin before Earth existed?
Two scientists using Moore's Law to explain the exponential increase in life's complexity have found that, by this measure, life is older than Earth itself.
April 18, 2013
New mobile app identifies hummingbirds and blooms that feed them
The National Audubon Society has launched a new Citizen Science project to document hummingbird sightings across the country, using a free mobile app that identifies bird species as well as the plants that feed them.
April 18, 2013
What’s special about the shape of a Nautilus shell?
The early mathematician Fibonacci introduced Arabic numerals to the West. He also discovered a number sequence that's in everything from daisies to databases.
April 18, 2013
Robot hands gain a gentler touch
Researchers have developed a very inexpensive tactile sensor for robotic hands that is sensitive enough to turn a brute machine into a dextrous manipulator.
April 18, 2013
Are you ready for the Lyrid meteor shower?
Tips from an EarthSky community member on how to find a good location for the Lyrid meteor shower - and useful things to take with you if you decide to go out.
April 18, 2013
Last night’s moon in a hazy sky
First quarter moon - when the moon appears half illuminated - comes on April 18. Last night, the line between light and dark on the moon was very slightly curved.
April 18, 2013
SN 1006: A colossal star explosion, 10 centuries later
SN 1006 is a supernova remnant, a cloud of star debris initiated by a colossal stellar explosion in the year 1006. The debris has been expanding outward that year.
April 17, 2013
Severe storms for southern U.S. Great Plains states April 17 and 18
Severe weather appears likely today and into Thursday across parts of Oklahoma, Kansas, Missouri and north Texas. Large hail, damaging winds and tornadoes.
April 17, 2013
Astronomers discover massive star factory in early universe
A team of astronomers has discovered a dust-filled, massive galaxy churning out stars when the cosmos was a mere 880 million years old -- making it the earliest starburst galaxy ever observed.
April 17, 2013
Life-and-death decisions made easier with online tool
A new program helps patients decide whether to accept a kidney from a infectious disease risk donor or keep waiting.
April 17, 2013
