Some microbes can withstand Earth’s most inhospitable corners, hinting that life may be able to survive similarly extreme conditions on other worlds.
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Saturn’s Iapetus, discovered way back in 1671, has three bizarre features that science still can’t fully explain.
Following the advent of human space flight, NASA began naming missions after children of Zeus.
The giant impact theory suggests our Moon was formed from proto-Earth getting a Mars-sized strike. An exoplanet system shows it’s plausible.
All across the Universe, planets come in a wide variety of sizes, masses, compositions, and temperatures. And most have rain and snow.
The number of planets that could support life may be far greater than previously thought, a recent discovery suggests.
The nearby, bright star Fomalhaut had the first optically imaged planetary candidate. Using JWST’s eyes, astronomers found so much more.
The space telescope’s findings challenge the notion of a galaxy brimming with life.
The universe’s largest seismometer reveals clues about the Gas Giant’s interior.
In a distant galaxy, a cosmic dance between two supermassive black holes emits periodic flashes of light.
The structure of our Solar System has been known for centuries. When we finally started finding exoplanets, they surprised everyone.
Newborn stars are surrounded only by a featureless disk. Debris disks persist for hundreds of millions of years. So when do planets form?
There’s a limit to how large planets can be, and it’s only about double the radius of Jupiter. At least, so far.
As Uranus approaches its solstice, its polar caps, rings, and moons come into their best focus ever under JWST’s watchful eye. See it now!
If there are human-sized creatures walking around on other planets, would we be able to view them directly?
Human beings are tiny creatures compared to the 92 billion light-year wide observable Universe. How can we comprehend such large scales?
The stars, planets, and many moons are extremely round. Why don’t they take other shapes?
Do you think you know the Solar System? Here’s a fact about each planet that might surprise you when you see it!
For some reason, when we talk about the age of stars, galaxies, and the Universe, we use “years” to measure time. Can we do better?
The answer may lie in the particular way sand forms on Titan.
The story of how Jupiter, Saturn, Uranus and Neptune were made isn’t a universal one. Some gas giants were built different.
In the largest star-forming region close to Earth, JWST found hundreds of planetary-mass objects. How do these free-floating planets form?
The classic picture of Jupiter’s great rocky core might be entirely wrong.
Some fascinating observations of K2-18b have come along with horrendous, speculative communications. There’s no evidence for oceans or life.
Scientists do not know what is causing the overabundance of the gas.
Some think the reason fundamental scientific revolutions are so rare is because of groupthink. It’s not; it’s hard to mess with success.
It is humanity’s biggest step yet into the Solar System.
Many planets will eventually be devoured by their parent star. For the first time, we caught a star in the act, eating its innermost planet!
No planet enters retrograde more frequently than Mercury, which does so 3-4 times each year. Here’s the scientific explanation for why.
Like Mars today, Venus used to be a sci-fi superstar. Recent discoveries could re-ignite our interest in Earth’s “evil twin.”