Perigee and apogee moons

Celestial Objects to Observe

What is a Supermoon? Facts vs. Fiction

The perpetuation of the supermoon myth is mostly motivated by desire for publicity. But much of what we call the supermoon is just our eyes playing tricks on us.


Subaru Sees New "Planet" Directly

A new companion found by direct imaging reveals a potentially cloudless gas giant oddly far from a young sun.


Seeking the Cosmic Dawn

Astronomers have finally detected a much-hoped-for pattern in the afterglow of the Big Bang, and it might help reveal inflation's signature.

Celestial News & Events

Catch a "Shooting Star"

The Delta Aquariid meteor shower ramps up in late July, and you already have everything needed to enjoy the show: your eyes.

Stellar Science

Ring Around the Dust Disk

Dusty disks that encircle young stars sometimes host giant gaps. But a new study shows these gaps aren't necessarily the signature of a nearby planet.


Crowded Clusters Host Planets

The discovery of two mini-Neptunes around Sun-like stars in a distinctly un-Sun-like environment reveals that small planets can live in more crowded neighborhoods than we thought.

Testing the IRIS spacecraft

Professional Telescopes

IRIS Tackles Coronal Mystery

Solar physicists hope NASA’s latest space observatory, the Interface Region Imaging Spectrograph, can finally discover what heats the Sun’s million-degree corona.

Venus and the Beehive

Celestial News & Events

Venus Buzzes the Beehive

Can you take on this twilight challenge?

Cat's Paw Nebula

Milky Way

Cat’s Paw Nebula: Nearby Mini-Starburst?

The Cat's Paw Nebula is home to many bright, young stars. But thousands of fainter stars concealed behind dust reveal themselves in a new infrared image.


New View of Nearest Galaxies

Spectacular high-resolution images released at the 222nd American Astronomical Society conference in Indianapolis reveal two of the Milky Way’s nearest galactic neighbors in a new light.


Closest Brown Dwarf System Discovered

Two newly discovered brown dwarfs lie just 6.5 light-years away, making them the closest brown dwarfs known, the third-closest star system known, and best of all, a promising target for exoplanet studies.