Space & Physics
Scientists Extend Einstein’s Relativity to the Universe’s First Moments
New calculations extend Einstein's general theory of relativity into the universe's first few moments
Astrophysics1392 articles archived since 1845
Space & Physics
Milky Way May Contain 100 Billion Planets
Based on exoplanet observations made using the Kepler space telescope, astronomers estimate that our galaxy's ratio of stars to planets is at least one to one. Karen Hopkin reports
Space & Physics
Black Hole Firewalls Confound Theoretical Physicists
If a new hypothesis about black hole firewalls proves correct, at least one of three cherished notions in theoretical physics must be wrong.
Space & Physics
Shadow Dance: Cassini Captures Dramatic Panorama of Saturn Backlit by the Sun
The giant planet Saturn looks a bit like a delicate Christmas ornament in a new photomosaic released by NASA.
Space & Physics
Shifty Sightings: Hubble Images Reveal 7 of the Most Distant Galaxies Ever Seen
The latest finds from Hubble date to just a few hundred million years after the big bang
Space & Physics
Newfound Asteroid Buzzes Earth inside Moon's Orbit
Researchers discovered the asteroid shortly before it came within 225,000 kilometers of the planet
Space & Physics
Space Bursts Provide Insight into Theory of Everything
Gamma rays emitted during the formation of neutron stars and black holes allow scientists to study fundamental principles like superstring theory
Space & Physics
Double-Star Systems May Hide a Third Companion
Scientists speculate that an energetic "kick" could boot a star out of orbit and drive the remaining pair closer together
Space & Physics
Galaxy Grande: Milky Way May Be More Massive Than Thought
Hubble observations of a speedy galaxy weigh on the Milky Way and indicate that our galaxy is at least a trillion times as massive as the sun
Space & Physics
Solar System's Moons May Have Emerged from Long-Gone Planetary Rings
Ancient, Saturn-like ring systems may have acted as assembly lines for natural satellites
Space & Physics
Is the Milky Way a Cannibal? An Astronomer Travels to the Driest Place on Earth to Find Out
At the driest place on Earth, one astronomer sifts through starlight to find clues about the Milky Way's evolution. Here is her account of a typical trip, based on four days in March 2011...
Space & Physics
Single Photon Could Detect Quantum-Scale Black Holes
Tabletop experiment proposed to show whether space-time is made of indivisible units.
Space & Physics
Galaxy Might Be Most Distant Seen Object
Thanks to gravitational lensing by a cluster of galaxies, the light emitted by a small galaxy 13.3 billion years ago has reached Earth. John Matson reports
Space & Physics
Captured World: Rare Direct Image Reveals "Super-Jupiter" Orbiting a Massive Star
Astronomers using the Subaru Telescope in Hawaii recently discovered ( pdf ) a "super-Jupiter" orbiting the star Kappa Andromedae (κ Andromedae) a star about 2.5 times the mass of our sun located about 170 light-years from Earth...
Space & Physics
Does the Moon Have Levitating Lunar Dust?
Scientists investigate mysterious floating dust particles that could be responsible for the moon's eerie glow
Space & Physics
Alien Planets with Extra Suns Can Have Strange Orbits
A new study suggests that "hot Jupiters," gas giants orbiting very close to their stars, may have a volatile early history
Space & Physics
"Orphan" Alien Planet Found Nearby without Parent Star
The massive exoplanet, which is likely four to seven times the size of Jupiter, is just 100 light-years from Earth
Technology
NASA Plans for 3-D Printing Rocket Engine Parts Could Boost Larger Manufacturing Trend [Video]
The space agency is testing alternative manufacturing processes for faster, cheaper ways to make parts for its new Space Launch System
Environment
Rocket Man: Land-Speed Racer Pushes 1,000 MpH Barrier [Slide Show]
England's Bloodhound Project successfully tested its booster in October, but other racers are likewise in hot pursuit of the land-speed record
Environment
Rocket Man: Land-Speed Racer Pushes 1,000 MpH Barrier [Slide Show]
England's Bloodhound Project successfully tested its booster in October, but other racers are likewise in hot pursuit of the land-speed record
