Nancy Roman

A team of US astronomers led by Kailash Sahu said they have finally discovered the first isolated stellar-mass black hole traveling through space by itself. The researchers...

Building an observatory on the Moon would be a huge challenge—but it would be worth it.

Some agree. Others are far from convinced.

Findings from the Dark Energy Spectroscopic Instrument (DESI) suggest that dark energy could be evolving over time. If they're right, cosmology will need a new model.

Our current best theories of the universe suggest that dark energy is making it expand faster and faster, but new observations from the Dark Energy Spectroscopic Instrument suggest this mysterious force is actually growing weaker

With contributions from NASA, the mission is looking back into the universe's history to understand how the universe's expansion has changed.

Project Manager - Goddard Space Flight Center

Astronomers have discovered what might be the speediest exoplanet system found so far. It moves at 1.2 million miles per hour (1.9 km per hour). The post Speediest exoplanet found near Milky Way center? first appeared on EarthSky.

The Hubble Space Telescope has imaged a stunning and unusual galaxy with nine rings around it.

The Euclid mission to survey the universe and understand the nature of dark energy and expanding universe has just released the first 1% of its cosmic atlas. The post First 1% of new cosmic atlas reveals millions of galaxies first appeared on EarthSky.

In a new study, astronomers compared high-resolution images of Uranus from the NASA/ESA Hubble Space Telescope to the more-distant view from NASA's New Horizons spacecraft.

NASA's Hubble Space Telescope has made strides in unraveling the mysteries surrounding dark matter.

Primordial black holes left over from the Big Bang and no wider than a dime could be a prime target for NASA's Nancy Grace Roman Telescope after it launches ...

Astronomy's future may be slipping away—one climate disaster at a time

NASA Administrator Bill Nelson and Japan's Minister of Education, Culture, Sports, Science and Technology (MEXT) Masahito Moriyama have signed an agreement to

For nearly all of the 20th century, the biggest question over the expanding Universe had to do with understanding what its fate would be. The Universe, if it's expanding, had to be a race between two…

Although Kepler 37-b has held the title of "smallest planet" for over a decade, it won't hold that designation forever.

NASA's UltraViolet EXplorer (UVEX) spacecraft will launch in 2030 to conduct an all-sky survey in ultraviolet light to bring new understanding of how stars...

As NASA explores the unknown in air and space, a new mission to survey ultraviolet light across the entire sky will provide the agency with more insight into

NASA's next super telescope in space is the first one specifically designed to seek signs of life on planets orbiting other stars.