If there is one star that serves to announce the arrival of fall as the leaves have begun to turn, unquestionably that title ...

The "Blaze Star" T Coronae Borealis is expected to erupt with a magnificent explosion sometime between now and September, becoming visible to the naked eye. Here's how to find it when it does. When ...

The month brings a spectacular lineup of celestial sights—including a rare chan Mercury without a telescope and a "micro" new ...

Vahe Peroomian has previously received funding from the National Science Foundation (NSF) and from the National Aeronautics and Space Administration (NASA) for work on space weather and geomagnetic ...

Over the past seven decades, thousands of sophisticated spacecraft have been launched on ambitious missions to look down on ...

“What’s up in the sky?” is a recurring feature and publishes on the first of every month. You can find it on WTOP’s The Space Place. Email Greg your space questions and he might answer them in the ...

A startling analysis from Globe at Night — a citizen science program run by NSF’s NOIRLab — concludes that stars are disappearing from human sight at an astonishing rate. The study finds that, to ...

The stars famous for appearing in the wintertime sky are now setting soon after sunset these days, as spring gets well and truly underway. Look west about an hour after sunset tonight to catch the ...

Sirius, also called the Dog Star, is the brightest star in Earth's night sky. Shining more brilliantly than any other star visible from Earth (excluding our sun, of course), Sirius is outshone only by ...

So how many stars are there? Given all of the above, astronomers estimate that the Milky Way contains around 100 billion stars, and there are at least 100 billion galaxies in the observable universe.

The Orionid meteor shower peaked on the nights of Oct. 21-23, delighting lucky stargazers with a gorgeous natural fireworks ...