Latest articles by Rafi Letzter
The Martian surface is a radiation hot zone. But ancient lava tubes might offer explorers safety from the cosmic bombardment
The 19.6 ton (17,800 kilogram) body of a Chinese rocket slammed into the planet's atmosphere today (May 11). It was the biggest such incident since 1991.
A new paper by physicist Edward Witten proposes hunting Planet 9 using a fleet of laser-launched probes like Breakthrough Starshots'.
Right now, key measurements of the universe's expansion are contradicting each other. A lost form of dark matter could help them agree.
A key signal for a certain kind of dark matter failed to turn up in a search throughout the Milky Way. Now scientists are disagreeing about what that means.
The bubble concept could explain one of the strangest mysteries plaguing astrophysics: Why can't we tell how fast the universe is expanding?
As the universe cooled in the era after the Big Bang, a supermassive black hole had already formed in the center of a galaxy, forming a giant engine of energy we can still see today.
Something's up with the North Star, a cepheid. Its distance, mass and age should be easy to measure. But new calculations keep disagreeing with one another and failing to make sense.
There's been a sharp drop in air pollution over China since the acceleration of the COVID-19 coronavirus outbreak, and satellites can see it from space.
Organizers of the American Physical Society's March conference made the decision to cancel due to coronavirus concerns less than two days before the conference was set to begin.
The bubbling, raucous quantum vacuum distorts the shape of every hydrogen atom in the universe, and it distorts antimatter "antihydrogen" too.
Physicist Freeman Dyson was known for his work on quantum physics and mathematics, as well as his big ideas about the far future.
If a giant object looks like it's going to slam into Earth, humanity has a few options. A new guide could help NASA decide which one is best.
Life on Earth likely began with the bubble-like membranes that surround our cells. Similar membranes probably wouldn't form on Titan, according to quantum mechanics.
For the first time, astrophysicists have detected a pattern in fast radio bursts, one of the most mysterious phenomena in the universe.
As Rosetta's comet got near enough to the sun for frost to evaporate off its surface, a color-changing water and dust cycle began that shuffled its colors around.
Watch out for the Zee burst!
This is a radical new design compared to the world's most sensitive gravitational wave detectors.
When two neutron stars slammed together far off in space, they created a powerful shaking in the universe — and their echoes could violate Einstein's theory of relativity.
A pair of researchers presented a wild new theory in a new paper.
A collision would create a debris belt that would endanger spacecraft worldwide.
What's making these things fly out of the frozen continent?
It was a lot more powerful than anyone believed.
