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A surprising JWST discovery around Fomalhaut has a different, superior explanation: not a great dust cloud, but a mere background object.
Massive objects like black holes, stars, and rogue planets routinely pass near our Solar System. An ensuing comet storm could destroy us.
Human beings are tiny creatures compared to the 92 billion light-year wide observable Universe. How can we comprehend such large scales?
The James Webb Space Telescope viewed Neptune, our Solar System’s final planet, for the first time. Here’s what we saw, and what it means.
From here on Earth, looking farther away in space means looking farther back in time. So what are distant Earth-watchers seeing right now?
It started with a bang, but won’t end with one. Instead, it will “rage against the dying of the light” like nothing you’ve ever imagined.
Our Universe requires dark matter in order to make sense of things, astrophysically. Could massive photons do the trick?
The odds are slim, but the consequences would be devastating. Here’s what would happen, plus how to avoid it.
In 1990, we only knew of the ones in our Solar System. Today, we know of thousands, and that’s just the tip of the iceberg.
In 2006, Pluto was demoted in a very controversial decision. Unless you ignore nearly all of planetary science, it’ll never be one again.
If dark energy gets stronger with time, our fate could be an utter catastrophe. When it comes to the entire Universe, one of the biggest existential questions we’re capable of […]
If we succeed in contacting them, will that seal humanity’s doom? One of the most wondrous questions of all concerns our place in the Universe. After 13.8 billion years of […]
Over the coming decades, over 100,000 new satellites are expected. For countless millennia, whenever we were faced with a clear, cloudless, moonless night, all of humanity was able to witness […]
If everything eventually dies and decays, is there a way to prolong the inevitable? Our Universe, as it exists today, puts us in an incredibly privileged position. Had we come […]
The definitive answer requires better, unbiased data. Despite all the advances that have occurred in human history, one extraordinary puzzle still remains right in our own backyard: we aren’t sure how […]
Are dark matter and dark energy both two sides of the same coin? When it comes to the Universe, what you can easily see isn’t always reflective of all there is. […]
No matter how your year went, Hubble’s views of the Universe never disappoint. Year after year, Hubble’s telescopic views are unparalleled. Saturn, its rings, and 5 of its moons are […]
There’s more light than we can account for, and we’ve just measured it robustly for the first time. When we look out at the darkest night skies available on Earth, even […]
We just found a system that we can’t explain. Here’s what’s going on. One of the most fascinating facts about the Universe is that there’s so much of it out there. […]
Over the past 30 years, we’ve revolutionized what we know about the Universe. But we couldn’t have done it without these lessons. On April 24, 1990, the Hubble Space Telescope rocketed […]
NASA’s New Horizons is the most distant technologically advanced observatory ever. And that makes all the difference. When you look at an object that’s very distant from you, how well […]
It’s one of only five spacecraft that will exit the Solar System, and the only one we have a chance to aim at another star. Of all the spacecraft ever launched, […]
Despite warnings and protestations from astronomers and skywatchers, Starlink is moving fast and breaking things. In May of this year, Elon Musk’s SpaceX launched the first group of its new satellite […]
Without this one ingredient, there wouldn’t be enough ‘glue’ to hold the Universe together. Of all the things in the Universe to be thankful for — the stars, planets, atoms, molecules, and […]
Cybercriminals have a wide variety of motivations for their attacks, and, correspondingly, there are a wide variety of targets. While few of us will find ourselves in positions where we […]
Observations have been ruined; scientific satellites with the right-of-way have had to alter course. Here’s a how-to guide to doing better. In any field of business or industry, the prevailing rule […]
Black holes are regions of extreme gravity, but dark matter barely interacts at all. Do they play well together? Black holes are some of the most extreme objects in the […]
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. […]
Two independent techniques give precise but incompatible answers. Here’s how to resolve it. If you didn’t know anything about the Universe beyond our own galaxy, there are two different pathways you […]