Pluto craft wakes from hibernation

And last week mission scientists filed a flight plan for New Horizons' next flyby - of the Kuiper Belt object 2014 MU69 - in early 2019. It'll be farthest encounter yet between an earthly spacecraft and distant solar system body.

NASA ponders Saturn mission legacy

A statement from NASA's Jet Propulsion Laboratory on Cassini mission success at Saturn, and on where solar system exploration will go from here.

Cassini milestones before the final plunge

Milestones for Cassini's final week at Saturn. Today's distant flyby of the large moon Titan will slow down the spacecraft enough so that - on Friday - Cassini will make its final plunge into Saturn's atmosphere.

Most detailed color images of Saturn’s rings, ever

As we prepare to say goodbye to Cassini at Saturn - one of the longest-running and most awesome space missions ever - here's yet another first, a finely seen section of Saturn's inner-central B Ring, in natural color.

Ultraviolet light key to life search, too?

Too little UV light, and life might not ever start. Too much, in the form dramatic UV flares from stars, and the atmospheres of orbiting planets might undergo damage.

X-ray astronomy and planet-hosting stars

X-ray astronomers explored how quickly young stars settle down after blasting the space around themselves - including any possible planets - with energetic radiation.

What drives Jupiter’s brightest auroras?

The sun drives Earth's auroras. But Jupiter’s brightest auroras may be accelerated by processes within the giant planet's own magnetic field.

Pluto features get names

The 14 geological features are the first to be officially named, following the New Horizons spacecraft's close flyby of Pluto in July 2015.

Asteroid 3122 Florence: Video and images

This large asteroid swept closest to Earth on September 1. It's big enough that astronomers are still catching it in small telescopes, as a small, slow-moving “star.”

How many house-sized NEOs?

A new study shows house-sized NEOs - Near-Earth Objects - to be 10 times fewer than studies had indicated. Still, there are some 3.5 million NEOs larger than 10 meters across.