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Editors of EarthSky

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.

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?

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.

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.

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.

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.

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!

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.

Stunning panorama from Opportunity rover on Mars marks 11th year

A panoramic view of the desert world next door, from one of the highest elevations reached by the Mars rover Opportunity in its 11 years on the Red Planet.

Is our Milky Way a wormhole?

In theory, our home galaxy Milky Way could be a wormhole - a galactic transport system - says a team of astrophysicists.