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These celestial wonders can tell us a lot about the state of the atmosphere at home on Earth as well as on other planets.

Phases of ice that exist naturally only on frozen moons could be detected using infrared spectroscopy, according to new laboratory experiments.

The beams hint at the true scale of the massive star that spawned them.

"Capturing another satellite like this in an Earth-observation image is extremely rare."

Though NGC 7456 looks like a modest spiral galaxy, new Hubble and XMM-Newton observations reveal a bustling system with star-forming regions and an active core.

"The idea was for our payload to get us just up to the potential biosignature designation and have the rest of the story told by instruments here on Earth."

Liftoff is scheduled for 11:54 a.m. ET today (Sept. 11).

Magnificent spiral galaxy

SpaceX promises a step change in performance for cell phone users around the world.

"This forces us to rethink the starting conditions for our planet’s water system."

Depending on where you smack a planet-threatening asteroid, it might ricochet back to Earth.

"GW250114 is the loudest gravitational wave event we have detected to date; it was like a whisper becoming a shout."

"There is no evidence of microbes on Mars today, but if any had been present on ancient Mars, they too might have reduced sulfate minerals to form sulfides in such a lake at Jezero crater."

The "Tranche 1 Transport Layer" network will eventually consists of 126 satellites in low Earth orbit.

Chile is a hotspot for telescopes peering up into deep space to study structures like stars, black holes, dark matter and galaxies.

"The profile of the occultation was most consistent with it being a new satellite — a new moon — going around Quaoar."

How soon do jets form when a supernova gives birth to a neutron star?

IMAP data "will help us better understand the fundamental physics of the heliosphere."

"If this is a massive star, it is a collapse unlike anything we have ever witnessed before."