How can we use the resources that are already on the Moon to make human exploration of the satellite as economical as possible?
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An asteroid about the size of a New York City block is flying between the Earth and the Moon today. How close, though?
How ‘special’ are we for life to have survived and thrived the way it did? While there are hundreds of billions of stars in our galaxy, many with Earth-sized planets at […]
Quick, what’s traveling at 106,000 kilometers per hour (66,000 mph) and is as big as a football field?
It’s been over 100 years since Einstein, and over 300 since Newton. We’ve still got a long way to go. From measuring how objects fall on Earth to observing the motion […]
Want to go to school to learn how to mine in space? Now you can.
Neil deGrasse Tyson explains why Trump’s Space Force is “not a crazy idea”.
It’s unlikely that there’s anything on the planet that is worth the cost of shipping it back
Three great things all align this August, making the Perseids a can’t-miss show. Here’s how to take advantage. When it comes to meteor showers, we have these dazzling pictures in […]
Our Universe is full of surprises. This latest one, AT2018cow, has ignited a controversy between astronomers. The Universe is an ever-changing place, particularly if you look at it on long-enough […]
Any hypothesis, no matter how alluring, must be confronted with the full suite of data. Our Solar System may be the closest part of the Universe to us as we look […]
Carl Sagan—who first coined the term—was tempted to call them “star-tar.”
Our Universe cannot be described by normal matter alone. Vera Rubin’s work led the way. Ask an astrophysicist what our Universe is made of, and you’ll likely receive a shocking surprise. […]
We can explore the farthest reaches of the Universe, but can’t even complete our own cosmic backyard. The history of astronomy has been a history of receding horizons. The invention […]
Breakthrough Starshot is moving ahead with an audacious vision for space exploration.
It’s very different from the colloquial meanings of “true-and-false” or “right-and-wrong.” In many ways, the human endeavor of science is the ultimate pursuit of truth. By asking the natural world […]
A vacuum cleaner is the wrong picture. Time to bust that myth. There are no classes of object in our Universe more extreme than black holes. With so much mass present […]
For the Pluto fans, another sad state of affairs: your favorite world won’t make it. Nothing on Earth lasts forever, and that’s a truth that even extends to all the objects […]
Researchers discover extraterrestrial origins of a chemical essential for human DNA and other cell processes.
From 4 billion miles away, it says a lot about the meaning of time.
Proxima Centauri, our closest star, is more than 4 light years away. Reaching it under 10,000 years will be challenging; reaching it with living humans will be even harder.
Only 8 worlds make the astronomical cut as planets. Here are the 10 fascinating bodies that didn’t make it. Astronomically, bodies within the Solar System must achieve three criteria in order […]
When we place the known objects in the Solar System in order, four inner, rocky worlds and four, outer, giant worlds stand out. Traditionally, these were defined as planets. Will […]
“I would rather be ashes than dust!rnI would rather be a superb meteor, every atom of me in magnificent glow,rnthan a sleepy and permanent planet.”rn — Jack London
The Perseid meteor shower during this weekend’s new moon should be fabulous.
It’s time to bust one of the biggest myths about where the night sky’s most spectacular, seasonal shows come from. Meteor showers are one of the night sky’s most spectacular sights […]
NASA just cancelled its only lunar rover in development, despite President Donald Trump’s orders to expand lunar expeditions.
Earth Day is over for this year, but what it means for our future is still being talked about.
Two of our biggest science-fiction dreams might not remain fiction for much longer. Here’s how 21st-century science could make it real. For as long as human beings have looked up at […]
Scientists have been probing our solar system for extraterrestrial life.