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Astronomy
Between the least massive star and most massive planet lies the mysterious brown dwarf: a class of objects that are neither star nor planet.
Isaac Newton and Albert Einstein are locked in an eternal battle over the nature of gravity. Whose side are you on?
In the largest star-forming region close to Earth, JWST found hundreds of planetary-mass objects. How do these free-floating planets form?
With so many early galaxies of unexpectedly large brightnesses, JWST surprised us all. Here's how scientists made sense of what we see.
With such a vast Universe and raw ingredients that seem to be everywhere, could it really be possible that humanity is truly alone?
In the quest to measure how antimatter falls, the possibility that it fell "up" provided hope for warp drive. Here's how it all fell apart.
12mins
There are a few theories as to why we’ve never found other intelligent life in our Universe. Physicist Brian Cox walks us through them.
The laws of physics don't prefer matter over antimatter. So how can we be certain that distant stars & galaxies aren't made of antimatter?
Within the next few decades, we may well have hard evidence for the existence of alien life on worlds light-years distant from Earth.
Some fascinating observations of K2-18b have come along with horrendous, speculative communications. There's no evidence for oceans or life.
How can you maximize the amount of love and happiness in your life? One of history's greatest scientists found the answer: with math.
5mins
NASA’s Michelle Thaller explains what happens when the densest stars in the galaxy collide.
Chemical changes inside Mars' core caused it to lose its magnetic field. This, in turn, caused it to lose its oceans. But how?
A more distant galaxy liked the lens so much that it went and put a ring on it. Here's the science behind this remarkable cosmic object.
This measurement is crucial to confirm that one of the assumptions of Einstein’s theory of gravity is valid.
The hot Big Bang was an energetic, brilliantly luminous event. Today's Universe is alight with stars. But in between, the dark ages ruled.
An enormous amount of antimatter is coming from our galactic center. But the culprit probably isn't dark matter, but merely neutron stars.
Finding a tiny planet around bright stars dozens or hundreds of light-years from Earth is extremely difficult.
Named "Supernova H0pe," it shows how JWST plus gravitational lensing can be used to solve the greatest puzzle facing astronomy today.
An annular eclipse is coming to Earth on October 14, 2023. Six months later, a total solar eclipse is headed our way. Here's the reason why.
How does star-formation, occurring in small regions within galaxies, affect the entire host galaxy that contains it? JWST holds the answers.
Scientists may have detected the somewhat smelly chemical dimethyl sulfide on a planet 120 light-years from Earth.
Dark matter hasn't been directly detected, but some form of invisible matter is clearly gravitating. Could the graviton hold the answer?
When science is a source of spirituality in people’s lives, they feel happy and engaged.
A spherical structure nearly one billion light-years wide has been spotted in the nearby Universe, dating all the way back to the Big Bang.
In 1987, the closest supernova directly observed in nearly 400 years occurred. Will a pulsar arise from those ashes? JWST offers clues.
The asteroid is expected to come within 140,000 miles of Earth — well inside the moon’s orbit.
Looking at our planet with post-Copernican eyes has the power to change how we relate to it and each other.
With ~400 billion stars in the Milky Way and 6-20 trillion galaxies overall, that makes for a lot of stars. But not as many as you'd think.
The biggest, brightest galaxies are the easiest to spot, but the tiniest ones teach us about how the Milky Way assembled and grew up!