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Leading science journalists provide a daily minute commentary on some of the most interesting developments in the world of astronomy and space exploration. For a full-length, weekly podcast...
New evidence points to the evolution of the ability for bacteria to grab nitrogen from the atmosphere some 3.2 billion years ago, about 1.2...
A dwarf galaxy near the Milky Way may consist of more dark matter than regular matter.* Clara Moskowitz reports
NASA has to deal with the unexpected financial consequences of robotic missions that just keep going. Lee Billings reports
The oldest group of terrestrial worlds now known formed some 11.2 billion years ago, more than six billion years before our sun and planets....
New images from a NASA orbiter reveal Beagle 2’s final resting place. Lee Billings reports
Australian amateur astronomer Terry Lovejoy’s latest comet find is naked-eye visible in the southeast sky until January 24. Clara Moskowitz...
The company hopes to send up a Falcon 9 rocket and then safely land the discarded first stage for reuse. Lee Billings reports
John Grunsfeld, the former astronaut who now heads NASA’s Science Mission Directorate, thinks that traveling light could get people to Mars...
Jupiter's Great Red Spot is its particular crimson shade because of the interaction of ultraviolet light and specific chemical compounds in...
Over the summer researchers identified seven specks of dust returned to Earth by the Stardust spacecraft. But determining their true origin...
The Rosetta spacecraft has unexpectedly detected hydrogen sulphide and ammonia coming from Comet Churyumov-Gerasimenko. Lee Billings reports
Take part in a citizen-science project by helping researchers track high-energy cosmic rays via a network of smartphone users. Clara Moskowi...
Astronomers have discovered one of the largest and most complex organic molecules yet in a gaseous star-forming region of interstellar space...
Data from the International Space Station-based Alpha Magnetic Spectrometer experiment supports the idea that dark matter consists of the in...
Texas State University astronomer Donald Olson combined solar, tidal and weather data to identify the likely moment of the image in the Mone...
Astronomers have identified the Milky Way’s cosmic address—inside the supercluster Laniakea, which means “immense heaven” in Hawaiian. Clara...
On August 24th, 1989, the Voyager 2 spacecraft rendezvoused with Neptune, making it the farthest planet to pose for a close-up, a record it...
If intelligent aliens are dumb enough to pollute their atmosphere, NASA’s upcoming James Webb Space Telescope is powerful enough to spot som...
Within a Mars-like laboratory environment, perchlorate salts known to exist on Mars were able to lower the freezing point enough to get ice...
The Cassini probe readies for its final act with new flight patterns that will get unprecedented views of Saturn and culminate in a final di...
A galaxy four billion light-years from us was has three supermassive black holes at its center, with two in a tight formation. Clara Moskowi...
The European Southern Observatory broke ground June 19th to build the world's largest telescope atop the Cerro Armazones mountain in Chile....
The current solar maximum appears to be weak. But the few previously measured maxes could have been unusually strong. Clara Moskowitz report...
A failed dwarf galaxy called the Smith Cloud apparently survived an ancient collision with the Milky Way because of a protective dark matter...
Pluto has at least five moons and an atmosphere—and now a new analysis places its diameter as bigger than its outer solar system rival, Eris
Jupiter's Great Red Spot, once estimated to be 41,000 kilometers across, is just 16,500 kilometers wide in the latest Hubble Space Telescope...
When a white dwarf passes in front of its binary star system companion every 88 days, it acts like a lens to make the larger star appear bri...
The star cluster HVGC-1 had been part of the M87 galaxy, but now it's fleeing that galaxy at more than two million miles per hour. Clara Mos...
A brown dwarf only about three to 10 times Jupiter's mass couldn't get fusion going and now sits freezing in space, in the nearby galactic n...
Citizen scientists have helped professional astronomers locate more than 500 million lunar craters by using an app called MoonMappers. Karen...
More than 100 tiny satellites are set to launch into space on April 14th, in a demonstration of a possible future inexpensive technology tha...
After prolonged periods in microgravity, astronauts' hearts became more spherical, according to scans done on the International Space Statio...
The asteroidlike object Chariklo orbits between Saturn and Uranus and has been found to have its own set of rings. Clara Moskowitz reports
An exhaustive search by NASA's Wide-Field Infrared Survey Explorer has found no hints of a theorized planet or dwarf star in our neck of the...
The half-the-speed-of-light spin of a giant black hole suggests it grew by digesting another black hole in a galaxy merger. Clara Moskowitz...
Spanish astronomers spotted a meteoroid impact at 61,000 kilometers per hour using a telescope network that automatically scans the moon. Cl...
The Hubble Telescope's new set of Frontier Fields images includes a galaxy some 13-billion light-years away, which makes it a candidate for...
Galileo—who, among many accomplishments, was first to use a telescope to discover moons around Jupiter—was born 450 years ago this week. Cla...
Exoplanet Kepler 413 b's tilt can vary by as much as 30 degrees over 11 years, leading to extremely erratic seasons. Clara Moskowitz reports
Astronomers have come up with a shopping list of what a planet needs to support life, perhaps even better than our Earth does, making them "...
On January 20th the European Space Agency woke its Rosetta probe after two-and-a-half years in hibernation, in preparation for its final app...
More than 3,000 astronomers assembled last week for the 223rd meeting of the American Astronomical Society. Clara Moskowitz reports
Two recently found supernovae are much farther away and brighter than almost any star explosion ever seen, perhaps because they wound up as...
The Wide-Field Infrared Survey Explorer satellite that went into hibernation in 2011 has been brought to life as an asteroid lookout. Clara...
Ten-year-old Nathan Gray of Nova Scotia officially becomes the youngest person ever to identify a new supernova. Clara Moskowitz reports
Don't miss viewing Comet ISON, visible in the east before dawn, with a tail now as long as the bowl of the Big Dipper. Clara Moskowitz repor...
India aims to become the fourth entity to send a mission to Mars with its launch of the Mars Orbiter Mission, aka Mangalyaan. Clara Moskowit...
At a symposium on the danger of asteroid impacts, Apollo astronaut Rusty Schweickart said it's time for the planet to develop a strategy sho...
Two of the three known planets around the star Kepler 56 orbit their host out of line with the star's equator. Clara Moskowitz reports.
Voyager 1's own record of the plasma vibrations in its vicinity conclusively show that it has reached the space between the stars. John Mats...