Images from Voyager I

This rendering provided by NASA shows Voyager 1 at the edge of the solar system. NASA said that the long-running spacecraft has entered a new region at the fringes of the solar system.

Video: Approach of Asteroid 2012 DA14

Movie from the Murrumbateman Observatory in Australia of asteroid 2012 DA14 during its close -- but safe -- flyby of Earth. The images were taken around 17:18 UTC (10:18 a.m. Tucson time) on Feb. 15, 2013. Image credit: D. Herald

Video: Gingin Observatory Spots Near-Earth Asteroid

This movie shows the asteroid 2012 DA14 flying safely by Earth, as seen by the Gingin Observatory in Australia at 9:50 a.m. PST (10:50 a.m. Tucson time), Feb. 15, 2013.

NASA Hubble's holiday ornament

100 days of science: UA-run camera revealing Mars wonders

The orbiting HiRISE camera has photographed an array of Mars surface features including these dunes seen in enhanced color.

Curiosity is sending back snapshots

One of the first photos shows the gravel on the surface of Mars' Gale Crater where the Curiosity landed. On the horizon is the crater's rim.

Mars-landing mission focus of special talks, viewing here

Caption unavailable

LPL's next mission

The "Loony lab" is currently directing OSIRIS-Rex, a NASA mission scheduled to launch in 2016, rendezvous with near-Earth asteroid RQ36 and return a sample of it to Earth.

Catch transit of venus June 5

See the transit of Venus on June 5 or wait 105 years for the next one.

UA space scientist's many questions ride aboard Jupiter craft

An artist's rendering shows NASA's Juno spacecraft nearing Jupiter. It's expected to arrive in 2016.

Life found on Mars - geologically speaking

A HiRISE photo shows apparently active gullies in a rock wall with debris at the bottom of the slope.

Life found on Mars - geologically speaking

Frost and dust flow down a near-vertical icy cliff in the north polar region.

NASA activates experimental robot help on space station - say 'Hi' to Robonaut

In March, astronaut Scott Kelly posed with the then-inactive Robonaut 2, a humanoid astronaut, aboard the space station. NASA turned on the robot Monday.

Mars Rover

This photo released July 19 by NASA shows NASA's Mars Exploration Rover Opportunity.

UA: Signs of flowing water on Mars ID'd

These dark lines that grow and fade seasonally on the surface of Mars may indicate the presence of flowing water on the Red Planet, according to University of Arizona researchers. The 3-D image revealing the tracks was created by an undergraduate student working at the UA’s Lunar and Planeta…

UA wins $800M NASA contract

This artist's rendering depicts the OSIRIS-REx spacecraft taking a sample of rocks and dirt from Asteroid 99RQ36 in a so-called "kiss."

Mars was 'recently' habitable planet

This image shows gullies near the edge of Hale crater on southern Mars, which scientists are excited to study because, on Earth, these features usually form through the action of liquid water.

Beads of Courage set to go into space

Beads like these will head into space today.

Spurned planet Pluto changing its looks, scientists say

This undated handout photo provided by NASA, taken by NASA's Hubble Space Telescope, shows the dwarf planet Pluto.The image shows an icy, mottled, dark molasses-colored world undergoing seasonal surface color and brightness changes.

Spurned planet Pluto changing its looks, scientists say

This is the most detailed view to date of the entire surface of the dwarf planet Pluto, as constructed from multiple NASA Hubble Space Telescope photographs taken from 2002 to 2003. The center disk (180 degrees) has a mysterious bright spot that is unusually rich in carbon monoxide frost.