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Posts by
Editors of EarthSky
Ultramassive black holes: How big can a black hole get?
A survey of 18 giant black holes shows that at least ten may weigh between 10 and 40 billion times the mass of the sun. Astronomers have dubbed these "ultramassive" black holes.
December 20, 2012
From Cassini for the holidays: A splendor seldom seen
Just in time for the holidays, NASA's Cassini spacecraft, in orbit around Saturn for more than eight years now, has delivered another glorious, backlit view of the planet Saturn and its rings.
December 19, 2012
New dinosaur may be oldest by 10 million years
Working with fossils found in Tanzania, scientists have discovered what may be the oldest known dinosaur.
December 19, 2012
A swoosh in space: Merry Christmas from Hubble
The NASA/ESA Hubble Space Telescope celebrates the holiday season with a striking image of the planetary nebula NGC 5189.
December 18, 2012
Dust plumes across Pacific delivering microorganisms to North America
Thousands of species of microorganisms are making their way from Asia across the Pacific Ocean and landing in North America.
December 17, 2012
Ian Duncan on environmental impact of fracking
A geologist's perspective on the environmental impact of fracking. Does it affect water quality? Does it cause earthquakes?
December 17, 2012
2012 extraordinary year for wildfires in US
Check out this map. The year 2012 has been extraordinary for wildfires in the United States.
December 16, 2012
If you cut down a tree in the forest, can wildlife hear it?
WCS and partners develop method to discern how landscape features affect dispersion of noise and distribution of wildlife.
December 14, 2012
Dolphin hearing system component found in insects
A hearing system component thought to be unique in toothed whales like dolphins has been discovered in insects, following research involving the University of Strathclyde.
December 13, 2012
NASA’s EUNIS mission: Six minutes in the life of the sun
A NASA mission to study the sun will make its third launch for a six-minute flight to gather information about the way material roils through the sun's atmosphere.
December 11, 2012
