Scientists have detected the somewhat smelly chemical dimethyl sulfide on a planet 120 light-years from Earth.
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.
The matter that creates black holes won't be what comes out when they evaporate. Will the black hole information paradox ever be solved?
The asteroid is expected to come within 140,000 miles of Earth — well inside the moon’s orbit.
Three fundamental forces matter inside an atom, but gravity is mind-bogglingly weak on those scales. Could extra dimensions explain why?
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.
Experts say it’s likely space junk—and there’s plenty more where that came from.
The biggest, brightest galaxies are the easiest to spot, but the tiniest ones teach us about how the Milky Way assembled and grew up!
American students are being compelled to specialize earlier and earlier. Here's what it takes to build a successful physics foundation.
By looking down, scientists are looking back in time.
Life in the supremely vast cosmos is incredibly rare. We need a new vision for our living planet and for ourselves.
The Universe isn't just expanding, the expansion is also accelerating. If that's true, how will the Milky Way and Andromeda eventually merge?
Despite the vast number of planets in the Universe, Earth's specific evolutionary history guarantees that its life forms — including humans — are utterly unique.
How fast is the Universe expanding? Two major methods disagree. New JWST data, just released, strengthens this Hubble tension even further.
Whether you call it 10 quintillion, 10 million trillion, or 10 billion billion, it's a 1 followed by 19 zeroes.
Some constants, like the speed of light, exist with no underlying explanation. How many "fundamental constants" does our Universe require?
Two fundamentally different ways of measuring the expanding Universe disagree. What's the root cause of this Hubble tension?