There are more galaxies in the Universe than even Carl Sagan ever imagined
There are between 6 and 20 trillion galaxies out there. Carl Sagan's "billions and billions" was far too low of a guess.
A new nova disappeared faster than ever, and an even bigger cosmic catastrophe is coming
Today, the fastest-ever nova to fall off has been discovered, and even faster ones may be out there. What comes next?
NASA-funded scientist says “MEGA drive” could enable interstellar travel
The mega drive might provide enough thrust for a spacecraft to travel near the speed of light using only electricity, says one physicist.
NASA teases Webb telescope’s first images with list of targets (Updated)
NASA has announced the first targets for the James Webb Space Telescope and plans to share the full-color images on July 12.
The cosmos can kill us in many ways. But the James Webb Space Telescope can help save us
Asteroid strikes, supernova explosions, and gamma-ray bursts are just a few of the ways the cosmos can kill us.
Scientists see “rarest event ever recorded” in search for dark matter
Researchers observed an ultra-rare particle interaction that reveals the half-life of a xenon-124 atom to be 18 sextillion years.
What happens if the Solar System’s largest comet collides with Earth?
The asteroid that caused the last mass extinction 65 million years ago was only 5 kilometers across — tiny compared to this one.
17 pictures that show how mind-bogglingly large the Universe is
Our entire planet is a little under 13,000 kilometers in diameter, or about seven orders of magnitude greater than the size of a human.
MIT proposes Brazil-sized fleet of “space bubbles” to cool the Earth
A raft of “space bubbles” could be used to reverse global warming, according to an MIT group's solar geoengineering proposal.
After 350 years, astronomers still can’t explain the solar system’s strangest moon
Saturn's Iapetus, discovered way back in 1671, has three bizarre features that science still can't fully explain.
An asteroid could wipe out an entire city – here’s NASA’s plan to prevent catastrophe
Cosmic bodies, like asteroids and comets, are constantly zooming through space and often crash into our planet.
Hibernating squirrels hint at secret to surviving space travel
Astronauts lose muscle mass in space. The secret to how ground squirrels keep mass in hibernation may help future space travelers keep their own.
Startup will send prized artifacts to the International Space Station
Uplift Aerospace will transport valuable goods to the ISS and house them in their Constellation Vault starting this year.
Astronomers have found the biggest group of rogue planets yet
Using ground telescopes and satellite observations taken over decades, researchers have identified the largest number of wandering rogue planets yet.
I wrote the book on warp drive. No, we didn’t accidentally create a warp bubble.
The same (former) NASA engineer who previously claimed to violate Newton's laws is now claiming to have made a warp bubble. He didn't.
NASA’s DART mission will move an asteroid (Updated)
If a giant asteroid were to slam into Earth, well, we’d be in trouble. That’s why NASA is launching DART, the world’s first planetary defense mission.
The Moon has enough oxygen to sustain 8 billion people for 100,000 years
A Belgium startup expects to send their technology to the Moon by 2025 to improve the process of making oxygen via electrolysis.
Scientists listen to marsquakes to map the inside of the planet
With information garnered from marsquakes, researchers have created the first complete image of the interior structure of Mars.
“Star shrapnel” from a supernova explosion is exiting the galaxy
A metallic star is hurtling out of the Milky Way, propelled by a supernova explosion triggered after it ate its partner star as a white dwarf.
Harvard astrophysicist will lead hunt for alien technology
Harvard astrophysicist Avi Loeb’s new Galileo Project will hunt for alien technology using proven scientific methods and equipment.
Astronomers find more than 100,000 "stellar nurseries"
The biggest survey of stellar nurseries to date, PHANGS-ALMA, charts more than 100,000 star formation regions across our corner of the universe.
See the most realistic simulation of star formation yet
A new simulation of star formation is the most realistic ever created, giving scientists an unprecedented opportunity to study the birth of a star.
Algorithm quickly simulates massive universes in high-res
A new algorithm lets astrophysicists produce high-res cosmological simulations of large parts of the universe far more quickly than was previously possible.
NASA plans to send probe deep into interstellar space
An in-development Interstellar Probe could explore an area 10 times farther away than any craft before it, providing an unprecedented look at interstellar space.
More than 5,000 tons of space dust hit Earth every year
We now know about how much space dust — micrometeorites that may have seeded Earth with the ingredients for life — hits the planet every year.
This cloudless “hot Jupiter” is unlike any known exoplanet
Astronomers have discovered a first-of-its-kind cloudless hot Jupiter — and it could expand our understanding of exoplanet formation.
The plan to convert space debris into labs for astronauts
Space services company Nanoracks plans to convert space debris into orbiting “Outposts” that could serve as hotels, research parks, and more.
Two dozen “superhabitable” exoplanets may be better than Earth
Earth is successful at supporting life, but it may not be the most successful. These 24 “superhabitable” exoplanets may be even better.
Astronauts lose muscle in space. These mice could hold the solution
Without gravity, astronauts experience muscle and bone loss, limiting mission time. Mice that gain mass in orbit may hold the key to preventing that loss.
China Mars mission joins Emirates, with U.S. to follow
With each new Mars mission, the red planet renaissance heats up this July. China and newcomer the UAE are off-world, and NASA’s on deck.
Why the U.S. government treated satellites and machine guns as the same for 15 years
Regulations forced companies that planned to sell satellites to other countries to register, in effect, as arms...