NASA Science Missions

Featured Missions

Our mission milestones showcase the breadth and depth of NASA science.

Artist's rendering of NASA's Europa Clipper

Europa Clipper

Launched Oct. 14, 2024, Europa Clipper’s main science goal is to determine whether there are places below the surface of Jupiter’s icy moon, Europa, that could support life.

Boxy, SmallSat in orbit over the Moon

Lunar Trailblazer

Launching in 2024, the goal of Lunar Trailblazer is to understand the form, abundance, and distribution of water on the Moon, and the lunar water cycle.

Artist Rendering of NISAR

NISAR

Launching in 2024, NISAR will systematically map Earth and study changes to ice sheets, glaciers, and sea ice in fine detail, as climate change warms the air and ocean.

All Science Missions

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ST5 Mission Images

ST5

ST5 was a mission born of the New Millennium Program, which was established to identify, develop, build, and test innovative…

illustration of ST6 spacecraft with beam scanning surface of earth

ST6

Since the dawn of the space age, unmanned spacecraft have flown blind, with little or no ability to make decisions…

Illustration of Stardust spacecraft in space.

Stardust / Stardust NExT

Stardust was the first spacecraft to return samples from a comet to Earth.

Surveyor 1

What was Surveyor 1? NASA’s Surveyor 1 completed the first true soft-landing on the Moon. The mission was considered a…

Surveyor 2

A thruster malfunction caused this U.S. lunar lander to crash near Copernicus crater on the Moon.

Astronaut and spacecraft on the surface of the Moon.

Surveyor 3

What was Surveyor 3? NASA’s Surveyor 3 was the second in the Surveyor series to make a soft landing on…

Surveyor 4

What was Surveyor 4? NASA’s Surveyor 4 was the fourth in a series of spacecraft designed to make a soft…

Surveyor 5

What was Surveyor 5? NASA’s Surveyor 5 lander was the first spacecraft to do a soil analysis on the Moon,…

Surveyor 6

Surveyor 6 sent back 29,952 images of the Moon's surface from the Sinus Medii region.

Surveyor 7

This final uncrewed Surveyor Moon lander mission was dedicated purely to lunar science.

Astronaut and spacecraft on the surface of the Moon.

Surveyor Model 1

This second U.S. practice run at a Moon landing went off without a hitch.

Astronaut Alan Bean inspects Surveyor 3 on the Moon.

Surveyor Model 2

A thrust imbalance prevented this early spaceflight test from achieving its simulated Moon mission.

Surveyor Model SD-1

A premature engine shutdown caused this U.S. practice Moon mission fall back to the launch pad and explode.

TIROS Mission Image

TIROS

The Television Infrared Observation Satellite Program (TIROS) The TIROS Program (Television Infrared Observation Satellite) was NASA’s first experimental step to…

TOMS-EP Mission Image

TOMS-EP

The Total Ozone Mapping Spectrometer, launched in July 1996 onboard an Earth Probe Satellite (TOMS/EP), continues NASA’s long-term daily mapping…

TRACE

TRACE was a satellite mission designed to deepen understanding of our dynamic sun’s activity, by exploring the connections between fine-scale…

Artist's concept of Ulysses spacecraft.

Ulysses

Solar Polar Orbiter

Venus Express

What was Venus Express? Venus Express was the first European spacecraft to orbit Venus. The original mission was expected to…

Black and white photo of the surface of Mars

Viking 1

Viking 1 made the first truly successful landing on Mars. The Soviet Mars 3 lander claimed a technical first, but…

Part of Viking 2 seen with Martian boulder field in the background.

Viking 2

Mars Lander & Orbiter

Yohkoh Mission Image

Yohkoh

Orbit: Low-Earth Orbit Yohkoh (“Sunbeam”) was a Japanese solar mission with USA and UK collaborators. It was launched into Earth…