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Space Exploration
If your computer crashes, it might be due to a star that exploded somewhere in the Universe millions of years ago.
Hubble revolutionized astronomy more than once. Here's what we can expect from the James Webb Space Telescope.
Einstein's "happiest thought" led to General Relativity's formulation. Would a different profound insight have led us forever astray?
Should we be searching for life on other planets, or technology?
Do aliens dream about meeting us, too?
NASA was dangerously cavalier about the dangers of the shuttle launches.
Not too hot, not too cold...
With a telescope at just the right distance from the Sun, we could use its gravity to enhance and magnify a potentially inhabited planet.
"You develop an instant global consciousness, a people orientation, an intense dissatisfaction with the state of the world, and a compulsion to do something about it."
We only detected our very first gravitational wave in 2015. Over the next two decades, we'll have thousands more.
We knew we'd find galaxies unlike any seen before in its first deep-field image. But the other images hold secrets even more profound.
The surface of asteroid Bennu is more like a plastic ball pit than the Moon.
"The surface is no longer a record of every impact the moon has ever had, because at some point, impacts were erasing previous impacts."
Quantum communication offers a surer path to sending an interstellar message, as well as receiving one. But can we do it?
Even though the leftover glow from the Big Bang creates a bath of radiation at only 2.725 K, some places in the Universe get even colder.
The costs of such an endeavor would be extremely high, while the potential payoffs would be uncertain.
The psychology of alien contact largely revolves around the concept of "otherness." We need to learn to be comfortable around strange things.
Like humans, stars die. The James Webb Space Telescope's early images already give us a lot of information about how this happens.
Astronomy's roots rest in the very origins of humanity. We have always looked to the skies for answers. We are starting to get them.
On Earth, carbon can form millions of compounds, while silicon is largely stuck inside rocks. But elsewhere, silicon could form the basis of life.
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Humans won’t survive if we stay on Earth. Michio Kaku explains.
At all distances, the Universe expands along our line-of-sight. But we can't measure side-to-side motions; could it be rotating as well?
Experts believe they could cut the time it takes a rocket to reach Mars by up to 25%, shaving about two months off the trip.
The discovery calls into question the few things scientists know about these powerful astronomical phenomena.
There are billions of potentially inhabited planets in the Milky Way alone. Here's how NASA will at last discover and measure them.
Do you think you know the Solar System? Here's a fact about each planet that might surprise you when you see it!
When stars form, they emit energetic radiation that boils gas away. But it can't stop gravitational collapse from making even newer stars.
If you think you know how an astronomical nova works, buckle up. You're in for a ride like you never expected.