For over two decades, astronomers have been perplexed by the existence of planetary-mass objects, or PMOs, celestial bodies ...

The $488-million mission is set to map the sky in 102 colors of light, probing cosmic inflation, galactic ices, and the history of the universe’s first light.

A team of scientists at the University of Utah has designed a flat lens that matches the power of traditional curved lenses ...

With measurement errors negated, what remains is the real and exciting possibility we have misunderstood the universe,” said Adam Riess, professor of physics and astronomy at Johns Hopkins University.

The megaphone-shaped spacecraft, called SPHEREx — short for Spectro-Photometer for the History of the Universe, Epoch of ...

For centuries, telescopes have relied oncurved glass lenses to bend light and bring the cosmos into focus. While effective, ...

The cosmos is riddled with evidence that the universe began with an exotic, unfathomably rapid expansion, but scientists ...

The agency is encouraging astronomy clubs to throw “star parties” to introduce people to the nebulae and galaxies spotted by ...

More than 38,000 asteroids are known to be in Earth’s vicinity, including 973 “planet killers” of more than half a mile in diameter. Most pose no risk. But NASA estimates that only about 43% of nearby ...

A family portrait of the Andromeda galaxy and its orbiting dwarf satellites raises questions about how galaxies evolve.

SPHEREx is set to launch at Friday from California. Here are five things to know about NASA's latest advanced space telescope ...