Empty, intergalactic space is just 2.725 K: not even three degrees above absolute zero. But the Boomerang Nebula is even colder.
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You searched for: Neptune
The closest star system to Earth, just over 4 light-years away, has three stars and at least one Earth-sized planet. Is it time to go there?
The search for worlds outside our solar system has just turned up a planet, TOI-2257 b, with a truly extreme orbit.
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 […]
With a telescope at just the right distance from the Sun, we could use its gravity to enhance and magnify a potentially inhabited planet.
From here on Earth, looking farther away in space means looking farther back in time. So what are distant Earth-watchers seeing right now?
Much like computing technology, the Great Red Spot has been getting smaller and faster over the last few years.
If there are human-sized creatures walking around on other planets, would we be able to view them directly?
A new study shows that the Bernardinelli-Bernstein Comet is much larger than previously thought — potentially the largest ever spotted.
Pluto failed to meet the definition of a planet, but some astronomers think there might be a legitimate Planet 9 out there.
The largest moon around our last planet didn’t originate with Neptune. When it comes to the moons of our Solar System, there’s only one planet that doesn’t fit in with our […]
Most potentially hazardous asteroids remain unidentified. NEO surveyor could change that, but only if it’s funded, and soon.
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 […]
Known as orphaned planets, rogue planets, or planets without parent stars, these “outliers” might be the most common planet of all.
Out of the four rocky planets in our Solar System, only Earth presently has plate tectonics. But billions of years ago, Venus had them, too.
Want some crazy space phenomena? You don’t have to leave the neighborhood for it.
Although many of Einstein’s papers revolutionized physics, there’s one Einsteinian advance, generally, that towers over all the rest.
We just observed the first ‘lunar formation’ in an exoplanetary system. This one image, above, is the first to show moons actively forming around a planet. This colourful image shows […]
Jupiter’s mysterious auroral events are caused by vibrating waves of plasma.
Tiny fluctuations in old Kepler data reveals four runaway planets that are reminiscent of Earth.
Massive objects like black holes, stars, and rogue planets routinely pass near our Solar System. An ensuing comet storm could destroy us.
When the average person has a “theory,” they’re just guessing. But for a scientist, a theory is the pinnacle of what we can achieve.
Phobos and Deimos only have two explanations, and neither one adds up.
Scientists find routes using arches of chaos that can lead to much faster space travel.
A newly discovered “ultrahot Jupiter” has the shortest orbit of any known gas giant.
Einstein’s “happiest thought” led to General Relativity’s formulation. Would a different profound insight have led us forever astray?
Each of our three nearest stars might have an Earth-like planet in orbit around it. Here’s what we’ll learn when we finally observe it.
The Earth that exists today wasn’t formed simultaneously with the Sun and the other planets. In some ways, we’re quite a latecomer.
JWST just found its first transiting exoplanet, and it’s 99% the size of Earth. But with no atmosphere seen, perhaps air is truly rare.
65 million years ago, a massive asteroid struck Earth. Not only did Jupiter not stop it, but it probably caused the impact itself.