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Posts by
Editors of EarthSky
Distant planet has four suns
Were it possible to see the skies from this world, the four parent stars would look like one small sun and two very bright stars visible in the daylight.
March 7, 2015
Mars lost ocean of water to space
About 4 billion years ago, a primitive ocean on Mars held more water than Earth's Arctic Ocean, say researchers, but Mars has lost 87 percent of it to space.
March 7, 2015
Why comets are like deep fried ice cream
Astronomers tinkering with ice and organics in the lab might have discovered why icy comets have hard, outer crusts.
February 11, 2015
Do pulses from seafloor volcanoes trigger climate swings?
Volcanoes on the ocean floor flare up on regular cycles - lasting from two weeks to 100,000 years. Do they help produce suddenly seesawing hot and cold periods?
February 10, 2015
Surprise! Earth’s core has a core
Researchers have found that the Earth’s inner core has an inner core of its own ... smaller than the moon.
February 10, 2015
Stunning view of Antarctica’s tallest volcano
Along Antarctica's Pacific coast, a chain of volcanoes jut from the ice sheet. The tallest of these is Mount Sidley. Here's a satellite view.
February 10, 2015
This date in science: First modern suspension bridge completed
It crossed a dangerous strait between Wales in western Great Britain - and an island that had become a place to catch the ferry to Ireland.
January 30, 2015
Astronomers discover oldest known Earth-sized planets yet
When our sun and planets were born, the Kepler-444 system was already older than our solar system is now.
January 29, 2015
Hear the birth of an iceberg
Different types of ice loss from glaciers produce distinct rumbles, snaps and splashes as icebergs are born. Have a listen!
January 29, 2015
View from space: India by night and by day
Two photos taken by ISS astronauts - one at night and the other in daylight - show the peninsula of southern India.
January 28, 2015
