extraterrestrial life
UFOs: US intelligence report finds no aliens but plenty of unidentified flying objects
A new government report describes 144 sightings of unidentified aerial phenomena.
False positive: Exoplanets could have lots of oxygen but no life
Oxygen is thought to be a biomarker for extraterrestrial life, but there are at least three different ways that a lifeless planet can produce it.
Less-advanced alien civilizations may be nearby — but we’re not looking for them
Humans are more likely to have "first contact" with an advanced alien civilization, according to a recent NASA-funded paper.
Can humans travel through wormholes in space?
Two new studies examine ways we could engineer human wormhole travel.
If we do find alien life, what kind will it be?
Three lines of evidence point to the idea of complex, multicellular alien life being a wild goose chase. But are we clever enough to know?
Finding aliens: Is there a ‘theory of everything’ for life?
The search for alien life is far too human-centric. Our flawed understanding of what life really is may be holding us back from important discoveries about the universe and ourselves.
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Top 5 theories on the enigmatic monolith found in Utah desert
A strange object found in the desert has prompted worldwide speculation.
Zircon in a meteorite opens the door on Mars’ past
Zircons in a Martian meteorite widens the possible timeframe for life on Mars.
Water may naturally occur as rocky planets form, new study suggests
An ancient Martian meteorite carries with it some compelling implications.
Jupiter’s intense radiation makes its moon Europa glow
Using a laboratory model, scientists get a nice Jovian surprise.
There may be 300 million habitable planets in our galaxy
A new study from NASA and the SETI Institute comes up with an exciting number of potentially life-supporting planets.
Scientists identify 24 planets potentially better suited for life than Earth
The study identified superhabitable planets outside of our solar system.
Venus’ clouds may harbor ‘aerial’ aliens, MIT scientists say
Scientists have detected within the Venusian atmosphere a chemical known to be a byproduct of life.
NASA scientists propose sending a submarine to explore Titan’s seas
The mission could launch as soon as the 2030s, the researchers said.
Mars colony: Humanity’s greatest quest
Just how close are we to setting up camp on another planet? It's complicated.
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The biology of aliens: How much do we know?
Hollywood has created an idea of aliens that doesn't match the science.
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Experts predict there are 36 contactable alien civilizations. Seriously.
Astrophysicists calculate the likely number of civilization out there capable of communicating with us.
3 mind-blowing space facts with Neil deGrasse Tyson
Tyson dives into the search for alien life, dark matter, and the physics of football.
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14 min
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Astronomer calculates the odds of intelligent alien life emerging
A new study discovers the likelihood of extraterrestrial life in the universe.
Study: Life might survive, and thrive, in a hydrogen world
When searching for extraterrestrial life, astronomers may want to look at planets with hydrogen-rich atmospheres.
Scientists discover animal that doesn’t need oxygen to live
It's the first time scientists have discovered an animal that doesn't perform aerobic respiration.
UFO sightings: Why Mount Shasta is the new Roswell
A volcano in California is a hot spot for conspiracy theorists.
2 new ways to find aliens, according to a Nobel Prize winner
Physicist Frank Wilczek proposes new methods of searching for extraterrestrial life.
An Earth-sized planet found in the habitable zone of a nearby star
Until about a decade ago, only two habitable zone planets of any size were known to astronomers: Earth and Mars.
Could invisible aliens really exist among us? An astrobiologist explains
The intelligent life we are searching for doesn't have to be humanoid.
Neil deGrasse Tyson: Scientists’ brains are wired to see differently
Scientists are expert observers. Because of this, they can help us develop a keener view of the world — the cosmos.
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Neil deGrasse Tyson: Want to prove aliens exist? Do this.
Neil deGrasse Tyson wants to believe. He just needs to see the evidence first.
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Top 4 candidates in our solar system for terraforming
When it comes time for humanity to pick a new home, where will we go?
Do aliens exist? If they did, would we know?
We still don't have proof of intelligent life beyond that on Earth.
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