When the Earth was born, it was a mess. Meteors and lightning... more

Anthropologist reveals a potentially big flaw in the Search for Extraterrestrial Intelligence (SETI). more

This cosmic lightning storm is happening all around us. Somewhere in the earthly sky, there is a pulse that flashes and extinguishes in the next moment. These bursts, which must be measured with radio telescopes and... more

Presently, Earth is the only known location where life exists in the Universe. This year the Nobel Prize in physics was awarded to three astronomers who proved, almost 20 years ago, that planets are common around... more

Life is pretty easy to recognize. It moves, it grows, it eats, it excretes, it reproduces. Simple. In... more

Could the creatures piloting UFOs be us? A recent book argues that reports of aliens here on Earth may be describing our distant human descendants, returning from the future to... more

A search for the truth behind UFO sightings leads to the discovery of government cover-ups. more

Deep within Earth, swirling liquid iron generates our planet's protective magnetic field. This magnetic field is invisible but is vital for life on Earth's surface: it... more

There's a long-held myth that Johannesburg is the globe's largest urban forest, resplendent with an annual purple Jacaranda show. But before the planting of these (alien) trees for timber during the Gold Rush in the 19th Century, Johannesburg... more

Astronomers at the National Astronomical Observatory of Japan (NAOJ) have analyzed the paths of two objects heading out of the Solar System forever and determined that they also... more

New research on microbial lifeforms living in nearly barren volcanic landscapes in Iceland may help scientists understand how best to search for life on other planets. more

A microorganism scooped up in deep-sea mud off Japan's coast has helped scientists unlock the mystery of one of the... more

Astronomers have detected five new planets, eight planet candidates, and confirmed three previously reported planets, around nine nearby... more

A 'cold Neptune' and two potentially habitable worlds are part of a cache of five newly discovered exoplanets and eight exoplanet candidates found orbiting nearby red dwarf stars. more

A "cold Neptune" and two potentially habitable worlds are part of a cache of five newly discovered exoplanets and eight exoplanet candidates found orbiting nearby red dwarf stars,... more

A 'cold Neptune' and two potentially habitable worlds are part of a cache of five newly discovered exoplanets and eight exoplanet candidates found orbiting nearby red dwarf stars.... more

An astrobiologist explains how alien life could exist and we wouldn't notice it. more

The US Navy confirmed they have secret, classified documents regarding a 2004 UFO encounter, but releasing them could 'gravely damage' national security. more

Stars have life cycles. They're born when bits of dust and gas floating through space find each other and collapse in on each other and heat up. They burn for... more

Life is pretty easy to recognise. It moves, it grows, it eats, it excretes, it reproduces. Simple. In biology, researchers often use the acronym "MRSGREN" to describe it.... more

NASA’s Transiting Exoplanet Survey Satellite (TESS) has discovered its first Earth-size planet in its star’s habitable zone, the range of distances where... more

China on Saturday officially opened operations of the world's largest radio telescope, which it will use... more

Bridgmanite, MgSiO3 with perovskite structure, is considered the most abundant mineral on Earth. On the lower mantle, it contains Fe and Al that strongly influence its behavior. Experimentalists... more

Sepsis, a life-threatening condition in which the body is fighting a severe infection that has spread via the bloodstream leading to poor... more

Where did these stars come from? more

To date astronomers have discovered over 4,000 planets orbiting other stars. Statistically, there should be over 100 billion planets in our Milky Way galaxy. They come in a wide range... more

An international team of astronomers used the Atacama Large Millimeter/submillimeter... more

A new simulation suggests at least a few of the dirty snowballs are interstellar visitors more

Using NASA’s Transiting Exoplanet Survey Satellite, the agency’s Spitzer Space Telescope and other facilities, astronomers have discovered a... more

NASA's Transiting Exoplanet Survey Satellite (TESS) has discovered its first Earth-size planet in its star's habitable zone, the range of distances where conditions may be just right to allow the... more

Since exoplanets are so far away, astronomers cannot look for signs of extraterrestrial life... more

Scientists have discovered what may be TESS' first known Earth-sized planet in the habitable zone of a nearby star, meaning liquid water could exist on the... more

NASA's Transiting Exoplanet Survey Satellite (TESS) has discovered its first Earth-size planet in its star's habitable zone, the range of distances where conditions may be just right to allow the... more

NASA's Transiting Exoplanet Survey Satellite (TESS) has discovered its first Earth-size planet in its star's habitable zone, the range of distances where conditions may be just right to allow the presence of liquid water... more

Scientists have developed a new method for detecting oxygen in exoplanet atmospheres that may accelerate the search for life. The new technique detects the signal that oxygen molecules produce when... more

Science chats with two experts about what future paleontologists—or perhaps even visiting aliens—might find more

Galaxies are like snowflakes. Though the universe contains innumerable galaxies flung across time and space, no two ever look alike. One of the most photogenic is the huge spiral galaxy UGC 2885, located 232 million light-years away in... more

An international team of astronomers used the Atacama Large Millimeter/submillimeter Array (ALMA) to create the most detailed image yet of the gas... more

Alien life is out there, but our current theories seem to be steering us away from it, says this scientist. more

If we discovered evidence of alien life, would we even realize it? Life on other planets could be... more

They were seen sparkling across the skies of Montana right around Christmas: a tidy... more

The existence of habitable alien worlds has been a mainstay of popular culture for more than a century.... more

The Mars 2020 rover, which sets off for the Red Planet next year, will not only search for traces of ancient life, but pave the way for future... more

A NASA robotic rover is nearing completion ahead of a... more

The Habitable Exoplanet Observatory (HabEx) would use a telescope with a mirror larger than Hubble’s, and would employ... more

A team of researchers at MIT has found that phosphine, which is among the... more