One year after launch, NASA’s Kepler mission draws out the brainpower of the astronomical community to solve a stellar paradox.
A new analysis reveals that asteroids with "fresh" surfaces may have been disrupted by near-Earth encounters in the last few hundred thousand years.
Did a comet wipe out the giant mammals of North America — or were they already on the way out before the comet arrived (if it arrived)? Two apparently contradictory findings add fuel to the debate.
Is there a neutron star lurking at the heart of the spectacular supernova remnant or something much weirder? A new analysis of observations suggests a surprising answer.
A new analysis showing a cloud of high-energy particles hovering around the center of the Milky Way could be the signature of dark matter and evidence of a “dark force”, but not everyone is convinced.
Surprising advances in radio astronomy have put astronomers within reach of imaging the supermassive black hole in the Milky Way and the active galaxy M87.
What do you do when a wildfire threatens to engulf your observatory? In the latest episode of The Universe in Mind podcast Hal McAllister tells the story of the battle to save Mt. Wilson. Author Marcia Bartusiak puts the famous observatory in context with her new book about the discovery of the modern universe.
Theories of solar-system formation have a hard time explaining why Earth didn't spiral into the Sun. Now there's a possible explanation.
The "hot Jupiter" HD 209458b caused a sensation when astronomers seemed to see its gaseous atmosphere leaking out into space. Now one team of researchers says a magnetic personality could prevent the planet from evaporating before our eyes.
Just under 13,000 years ago, the mammoth and several other large mammalian species vanished from North America. In a podcast, Ivan Semeniuk explores the controversial claim that the mass extinction was triggered by a comet impact and how microscopic diamonds hold the key to understanding what really happened.
Astrophysicist Neil Cornish (Montana State University) talks about recent progress in the hunt for gravitational waves.
There was a certain amount of politics behind the decision to site the Thirty Meter Telescope on Mauna Kea. But there was science behind the politics too.
Who knew? One of the brightest stars in the spring sky has a secret to tell.
A meteorite kept in the freezer retains its cosmic fizz
A picture perfect Whirlpool galaxy bodes well for the scientific promise of the newly launched Herschel Space Telescope.
Times were tough, but life may have survived the worst bombardment in Earth's history.
Astrophysicist Donald Lamb shares his experiences as part of Barack Obama's science team during the presidential race.
What motivates the next generation of space observatories
Is a recently imaged exoplanet giving birth to its own system of moons?
A balloon ride around Antarctica reveals how the Milky Way is like an avalanche.
NASA's Swift spacecraft reveals new aspects of Comet Lulin when viewing it in X-rays and the ultraviolet.
Are the fundamental parameters of our universe are mere coincidences or the products of deep natural laws?
One of the many big differences between Earth and Venus that could have a bearing on habitability is the absence of a strong magnetic field on Venus. So is it just dumb luck that we have a magnetic field and Venus doesn’t? Or is something deeper going on here?