"The large-scale homogeneity of the universe makes it very difficult to believe that the structure of the universe is determined by anything so peripheral as some complicated molecular structure on a minor planet orbiting a very average star in the outer suburbs of a fairly typical galaxy."

— Steven Hawking

NASA Image of the Day

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The latest NASA "Image of the Day" image.
Updated: 12 hours 27 sec ago

Hubble Takes Closer Look at Not-So-'Dead' Neighbor

Fri, 09/20/2019 - 9:27am
Because they lack stellar nurseries and contain mostly old stars, elliptical galaxies — Like Messier 110 — are often considered “dead” when compared to their spiral relatives. But scientists have spotted signs of a population of young, blue stars at Messier 110's center, hinting that this neighbor of our Milky Way may not be so “dead” after all.
Categories: Astronomy, NASA

Layers in Mars' Danielson Crater

Thu, 09/19/2019 - 11:29am
This image shows sedimentary rock and sand within Danielson Crater, an impact crater about 42 miles or 67 kilometers in diameter, located in the southwest Arabia Terra region of Mars.
Categories: Astronomy, NASA

Space Station Downlink with Actor Brad Pitt

Tue, 09/17/2019 - 7:00am
Actor Brad Pitt speaks with NASA astronaut Nick Hague who is onboard the International Space Station, Monday, Sept. 16, 2019.
Categories: Astronomy, NASA

Franklin Chang-Diaz Performs a Spacewalk on the STS-111 Mission

Mon, 09/16/2019 - 11:58am
In this mage from June 2002, astronaut Franklin R. Chang-Diaz works with a grapple fixture during a spacewalk to perform work on the International Space Station.
Categories: Astronomy, NASA

Mae Jemison Trains for Her Space Shuttle Flight

Thu, 09/12/2019 - 7:31am
Mae Jemison, the first black woman in space, participated in crew egress training for Space Shuttle Endeavour's STS-47 mission during the Terminal Countdown Demonstration Test.
Categories: Astronomy, NASA

Remembering September 11th and Looking to the Future

Wed, 09/11/2019 - 7:31am
This 2019 photo of Manhattan, taken by astronaut Nick Hague from aboard the International Space Station, shows a city totally recovered from the attack on September 11, 2001.
Categories: Astronomy, NASA

Testing and Training on the Boeing Starliner

Tue, 09/10/2019 - 8:14am
NASA astronaut Mike Fincke works through a check list inside a mockup of Boeing's CST-100 Starliner during a simulation at NASA's Johnson Space Center on Aug. 21, 2019.
Categories: Astronomy, NASA

Learning to Track Water Using NASA Satellite Data

Mon, 09/09/2019 - 9:09am
It's Back to School Week and NASA has activities to keep students motivated.
Categories: Astronomy, NASA

Clues for Mars in the Australian Outback

Fri, 09/06/2019 - 8:14am
Scientists with NASA's Mars 2020 mission and the European-Russian ExoMars mission traveled to the Australian Outback to hone their research techniques.
Categories: Astronomy, NASA

Satellite Captures Four Tropical Cyclones from Space

Thu, 09/05/2019 - 10:43am
On Sept. 4, 2019, a loose chain of tropical cyclones lined up across the Western Hemisphere.
Categories: Astronomy, NASA

An Infrared View of the M81 Galaxy

Wed, 09/04/2019 - 9:19am
Located in the northern constellation of Ursa Major, which also includes the Big Dipper, nearby galaxy Messier 81 is easily visible through binoculars or a small telescope.
Categories: Astronomy, NASA

Jessica Meir Climbs Aboard a Soyuz Trainer

Tue, 09/03/2019 - 10:25am
At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 61 crewmember Jessica Meir of NASA climbs aboard a Soyuz trainer during final crew qualification exams on Aug. 30.
Categories: Astronomy, NASA

Hurricane Dorian Seen From Aboard the Space Station

Mon, 09/02/2019 - 2:02pm
NASA astronaut Christian Koch snapped this image of Hurricane Dorian as the International Space Station during a flyover on Monday, September 2, 2019.
Categories: Astronomy, NASA

Hubble Views Final Stages of a Star’s Life

Fri, 08/30/2019 - 10:00am
NGC 5307, a planetary nebula that lies about 10,000 light-years from Earth, can be seen in the constellation Centaurus.
Categories: Astronomy, NASA

Celebrating Spitzer's Sweet Sixteen

Thu, 08/29/2019 - 9:01am
Spitzer Space Telescope into orbit around the Sun on Aug. 25, 2003. Since then, the observatory has been lifting the veil on the wonders of the cosmos, from our own solar system to faraway galaxies, using infrared light.
Categories: Astronomy, NASA

Lifting the Space Launch System Core Stage Into Place

Wed, 08/28/2019 - 9:09am
NASA cleared a milestone in preparation for Green Run testing of its Space Launch System (SLS) core stage with the lift and installation of the core stage pathfinder simulator onto the B-2 Test Stand.
Categories: Astronomy, NASA

Astronaut Andrew Morgan Performs His First Spacewalk

Tue, 08/27/2019 - 8:33am
West Point graduate, physician and NASA astronaut Andrew Morgan is pictured working outside the International Space Station .
Categories: Astronomy, NASA

Christine Darden: From Human Computer to Engineer

Mon, 08/26/2019 - 9:02am
In 1967, Christine Darden was added to the pool of 'human computers' who wrote complex programs and tediously crunched numbers for engineers at NASA's Langley Research Center.
Categories: Astronomy, NASA