Travel to the past is probably impossible. But the future is a different story.
A distant 'super-Earth' size planet known as Kepler-62f could be habitable, a team of astronomers reports. The planet, which is about 1,200 light-years from Earth in the direction of the constellation Lyra, is approximately 40 percent larger than Earth.
Ingredients crucial for the origin of life on Earth, including the simple amino acid glycine and phosphorus, key components of DNA and cell membranes, have been discovered at Comet 67P/Churyumov-Gerasimenko.
Scientists are solving one of the biggest unsolved mysteries in galaxy evolution. Scientists have uncovered a new class of galaxies, called "red geysers," with supermassive black hole winds so hot and energetic that stars can't form.
Astronomers have used gravitational lensing to detect an incredibly faint early-universe galaxy 13 billion light years away.
Two large meteorites hitting the planet millions of years apart triggered a pair of mega-tsunamis. These gigantic waves forever scarred the Martian landscape and yielded evidence of cold, salty oceans conducive to sustaining life.
Amelia Stutz and Andrew Gould from the Max Planck Institute for Astronomy in Heidelberg are bringing gravity and magnetic fields into play. To test their idea, they undertook a detailed investigation of the Orion Nebula, 1300 light-years away.
Four sister robots built by NASA could be pioneers in the colonization of Mars, but first the 2-million-dollar robots are finding new homes on Earth.
Looking up at the night sky -- expansive and seemingly endless, stars and constellations blinking and glimmering like jewels just out of reach -- it's impossible not to wonder: Are we alone? For many of us, the notion of intelligent life on other planets is as captivating as ideas come.
A 3,000 kilometer thick layer of hot compressed rock sandwiched between Earth
Astronomers searching for planets using NASA’s Kepler telescope have found an extraordinary family of four. Their orbits are so carefully timed that they provide long-term stability for their planetary system.
Terrific planet-wide thunderstorms on alien worlds far from our own have generated detectable radio bursts. Other such signals have been emitted from the heart of our own galaxy, perhaps due to the destruction of dark matter.
Physicists have now provided the first major results of NASA's Magnetospheric Multiscale (MMS) mission, including an unprecedented look at the interaction between the magnetic fields of Earth and the sun.
A small water jet on the icy moon spews its fiercest eruptions when the moon is farthest from the planet, but overall gas output hardly increases.
A new analysis shows that 1,284 candidate planets are indeed confirmed exoplanets.
