Moon near Uranus in July 25 predawn sky

Before sunrise on July 25, 2019, you'll find the moon at or near its last quarter phase and in the vicinity of the 7th planet Uranus on the sky's dome.

Joshua trees facing extinction

They outlived mammoths and saber-toothed tigers. But new research suggests that without dramatic action to reduce climate change, Joshua trees won’t survive much past this century.

Draco, great Dragon of the north

Meet Rastaban and Eltanin - lovely, romantic names for Dragon stars! These 2 stars represent the Eyes of the Dragon.

Meet a family of NASA space robots

NASA engineers are working on a new family of space robots that can roll, climb, and use artificial intelligence to navigate around obstacles in rough terrains on other worlds. Meet the family, here.

Corals spreading to subtropical waters

While coral populations are declining in tropical waters, scientists have just detected an increase in subtropical areas, which could be good news for corals.

Astronomers probe a mini-Neptune’s atmosphere

Exoplanet Gliese 3470 b fits nicely in size between our solar system's Earth and planet Neptune. Known as a "mini-Neptune," it likely has a rocky core beneath a deep, crushing, hydrogen-helium atmosphere. The analysis of its atmosphere is a first for one of these mid-sized worlds.

Gaia starts mapping our Milky Way’s bar

"We knew the Milky Way had a bar, like other barred spiral galaxies. But we only had indirect indications from the motions of stars and gas. This is the first time we see the galactic bar in 3D space, based on geometric measurements of stellar distances."

Are moons forming around this distant gas giant planet?

After many years of searching, astronomers have finally found what appears to be a circumplanetary disk - that is, a disk of gas and dust - surrounding a young exoplanet. Evidence suggests that moons may be forming there.

Morning moon

Photographer Lee Capps captured this week's morning moon from North Carolina. Thanks, Lee!

Planting a flag on the moon

With virtually no atmosphere on the moon - and, therefore, no wind - flags that fly freely on Earth would hang like limp cloth in the lunar environment. So Apollo 11 engineers had to rethink flagpole design entirely.