Some say that the Sun is a green-yellow color, but our human eyes see it as white, or yellow-to-red during sunset. What color is it really?
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If you thought it was just one rich region in space, look deeper and wider. Shining brilliantly in January’s skies is the Great Orion Nebula. By 10 PM every night in […]
Help future Mars rovers better navigate the red planet’s treacherous terrain.
Back in 1990, we hadn’t discovered a single planet outside of our Solar System. Here are 10 facts that would’ve surprised every astronomer.
The Universe’s idea of a ‘typical star’ has changed dramatically over time. When you look out at the Universe today, you’re not seeing it exactly as it is at one particular […]
We may be different in many ways, but the cosmic story is the same for each of us. In all the Universe, you won’t find another planet identical to Earth. Planet […]
Researchers discover strange behavior in magnetars, ultra-powerful magnetic stars.
The most unique interloper into our Solar System has a natural explanation that fits perfectly — no aliens required.
Forty Starlink satellites were destroyed earlier this year in a geomagnetic storm.
Dark energy is one of the biggest mysteries in all the Universe. Is there some way to avoid “having to live with it?”
The massive craft could carry 100 humans to Mars and revolutionize space exploration.
Artist Seán Doran recently created more than eight hours of high-definition video using images captured by Japan’s SELENE lunar orbiter.
We haven’t discovered life beyond our Solar System yet, but we’re closer than ever before. Over the past 30 years, we’ve gone from zero exoplanets to thousands. With each new […]
How slight differences could have forever changed our cosmic history. 13.8 billion years ago, what we know today as our Universe began with the hot Big Bang. Filled with matter, antimatter […]
The Big Bang was hot, dense, uniform, and filled with matter and energy. Before that? There was nothing. Here’s how that’s possible.
Scientists do not know what is causing the overabundance of the gas.
We used to think the Big Bang meant the universe began from a singularity. Nearly 100 years later, we’re not so sure.
The inside of every black hole leads to the birth of a new Universe. Could our Universe have arisen from one?
Water is vital for life. Luckily for spacefaring humans, the solar system is full of it.
By 2050, there may be more plastic than fish in the sea.
Individual space telescopes, like Hubble and JWST, revolutionized our knowledge of the Universe. What if we had an array of them, instead?
And why, even at its faintest, it always outshines every other star and planet. If you’ve been looking to the west after sunset recently, you may have noticed that there’s one […]
Tiny specks of space debris can move faster than bullets and cause way more damage. Cleaning it up is imperative.
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Think there are habitable super-Earths out there? Think again. Here in our Solar System, we have two very distinct types of planets: small, terrestrial, rocky worlds, with thin (or no) atmospheres […]
Whether or not life exists elsewhere in the Universe, we can be assured of one thing: We are the only human beings in the cosmos.
Not nearly well enough. And we should all be concerned. In 1859, the science of solar physics truly began with the largest eruption in recorded history: the Carrington event. Prior […]
It’s the best-known transcendental number of all-time, and March 14 (3/14 in many countries) is the perfect time to celebrate Pi (π) Day!
It’s been precisely 13.8 billion years since the Big Bang occurred. Here’s how we know.
An unprecedented number of new satellites threatens the night sky as we know it. Will we act in time to save it?
Virtual reality continues to blur the line between the physical and the digital, and it will change our lives forever.