Forget little green men: These scientists say we should be more worried about little green germs.
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Astronomers find a third type of supernova and explain a mystery from 1054 AD.
There are two fundamentally different ways of measuring the Universe’s expansion. They disagree. “Early dark energy” might save us.
No matter how controversial or politicized our world becomes, science remains humanity’s best tool for figuring out how things work.
The pulse took just 35 hours to cover the whole world.
The laws of physics aren’t changing. The Earth is. When it comes to any physical science, we know that the fundamental rules governing how the Universe works remain constant with time. […]
Ari Loeb, who suggested in 2018 that the mysterious object was an alien craft, is back to discuss the evidence.
One day, we could fly across the U.S. in half an hour. A state-of-the-art hypersonic flight testing facility at UTSA could help make that dream a reality.
Although most of the Universe’s mass is dark matter, which gravitates just as well as normal matter, it still can’t make black holes.
Our Solar System’s outer reaches, and what’s in them, was predicted long before the first Oort Cloud object was ever discovered.
Did the Milky Way form by slowly accreting matter or by devouring its neighboring galaxies? At last, we’re uncovering our own history.
We’ve already observed three cases where it’s happened. When you look at an object in space, it’s pretty easy to tell if it’s a star or a planet. Stars are […]
The mission could launch as soon as the 2030s, the researchers said.
And if it does strike us, how much damage will it cause? Will near-Earth asteroid Apophis strike us in 2068? Generically, asteroids under ~1 km in size are irregularly shaped, will […]
Planets are either rocky, like Earth, or gas-rich, like Neptune, with no in-between. What are the different types of planets that exist in the Universe? If all you could see […]
The research suggests that roughly 1 percent of galaxy clusters look atypical and can be easily misidentified.
Jupiter’s atmosphere is hotter than it should be, and now we know why.
The first Earth-sized planet without a parent star has just been discovered. For countless millennia, planets beyond our Solar System were mere speculation. Today, we know of over 4,000 confirmed […]
It happened more than once, and needed to. Here’s why. If there’s one thing you can be certain about when it comes to outer space, it’s that it’s transparent, not opaque, […]
The ANITA experiment found cosmic rays shooting out of Antarctica. One interpretation claims “parallel Universes,” but is that right?
Both made monumental contributions that were far ahead of their time. It’s hard to believe, but the idea that the Universe was dominated not by normal matter but rather by dark […]
After a decade of failed attempts, scientists successfully bounced photons off of a reflector aboard the Lunar Reconnaissance Orbiter, some 240,000 miles from Earth.
Cosmic rays aren’t just limited by the speed of light. Even among non-scientists, it’s well-understood that there’s an ultimate speed limit to the Universe: the speed of light. If you’re a […]
What we’ve seen isn’t necessarily what we get, but the most common world doesn’t look like ours. There’s a very common myth out there in astronomy: the idea that the Sun […]
While Mars is known as a frozen, red planet today, it has all the evidence we could ask for of a watery past, lasting for approximately the first 1.5 billion […]
The Twin Jet nebula, shown here, is a stunning example of a bipolar preplanetary nebula. At the center, a dying star is in the final stages of life where it […]
Even the most unorthodox posthumous plans have their own historical, spiritual, and scientific significance.
Migrating our planet to a safer orbit might be the only way to preserve Earth after all the ice melts.
On the largest scales, galaxies don’t simply clump together, but form superclusters. Too bad they don’t remain bound together.
The UAE is the first Arab nation to send a spacecraft to the Red Planet.