Search for life suggests solar systems more habitable than ours
(Phys.org)—Scattered around the Milky Way are stars that resemble our own sun—but a new study is finding that any planets orbiting those stars may very well be hotter and more dynamic than Earth.
Red dwarf stars might be best places to discover alien life
Red dwarfs are the most common type of star in the universe, and nearly every one of these stars may have a planet located in its habitable zone where life has the best chance of existing, a new study concludes.
NASA creates buzz with 'extraterrestrial' announcement
The US space agency has created a buzz with its announcement of a press conference Thursday to discuss a scientific finding that relates to the hunt for life beyond the planet Earth.
A new approach in the search for extraterrestrial intelligence: targeting alien polluters
Humanity is on the threshold of being able to detect signs of alien life on other worlds. By studying exoplanet atmospheres, we can look for gases like oxygen and methane that only coexist if replenished ...
Silence in the sky—but why?
(Phys.org) —Scientists as eminent as Stephen Hawking and Carl Sagan have long believed that humans will one day colonise the universe. But how easy would it be, why would we want to, and why haven't we ...
Seeing the Closest Aliens Will Take Centuries
As telescopes become more advanced, we’ll be able to see more details about planets orbiting other stars - including indications that those planets have life. However, it would probably take many centuries ...
Research group proposes first system for assessing the odds of life on other worlds
(PhysOrg.com) -- Within the next few years, the number of planets discovered in orbits around distant stars will likely reach several thousand or more. But even as our list of these newly discovered "exoplanets" ...
Mars was Wet, but was it Warm?
Mars is frozen today, but when it was young there may have been liquid water on its surface. What does the latest evidence indicate about the ancient martian climate? Understanding the past environment of ...
The Drake Equation revisited: An interview with Sara Seager
Planet hunters keep finding distant worlds that bear a resemblance to Earth. Some of the thousands of exoplanet candidates discovered to date have similar sizes or temperatures. Others possess rocky surfaces ...
Potential survival of extreme life forms on eccentric exoplanets
(Phys.org)—Astronomers have discovered a veritable rogues' gallery of odd exoplanets—from scorching hot worlds with molten surfaces to frigid ice balls.
Gases created when meteors slam into planets may provide false-positives of life
Meteoroids slamming against the atmospheres of alien worlds could add organic gases that make them look inhabited by life even if they are not, researchers say.
High planetary tilt lowers odds for life?
Highly-tilted worlds would have extreme seasons, subjecting life to alternating periods of scorching and subzero temperatures. This could make the development of all but hardiest, simplest creatures a long ...
An alien code close to home: Seeking ET beyond the radio silence
Any intelligent extraterrestrial life that exists probably won't announce itself by blowing up the White House, or win over the hearts of children as a lovable alien with a glowing finger. Many scientists ...
Scientists searching for alien life—on earth (w/ Video)
(AP)—Scientists at the University of Wisconsin-Madison are helping search for evidence of alien life not by looking into outer space, but by studying some rocks right here on Earth.