Exploring the Universe with NASA

NASA’s Lucy mission tests the deployment of its solar arrays in the thermal vacuum chamber at Lockheed Martin Space in Littleton, Colorado. Each of the two circular arrays is nearly 24 feet (7.3 m) wide. These arrays will power Lucy on its 12-year odyssey through the Jupiter Trojan asteroids, breaking records for a solar powered mission by traveling 530 million miles (853 million km) from the Sun. These large arrays will capture the sunlight needed to power the spacecraft as it travels through deep space.

In this artist’s rendition, we explore a metallic world named Psyche, an asteroid that offers a unique window into the building blocks of planet formation. The NASA Psyche mission launches in 2023 and will arrive at the asteroid Psyche, which orbits the Sun between Mars and Jupiter, in 2026. The spacecraft, also named Psyche, will spend 21 months orbiting the asteroid, mapping it and studying its properties. The mission is led by Principal Investigator Lindy Elkins-Tanton of Arizona State University. NASA’s Jet Propulsion Laboratory is responsible for the mission’s overall management, system engineering, integration and test, and mission operations. Maxar Technologies is providing a high-power solar electric propulsion spacecraft chassis.

For Earth Day 2021, we explore the connections of Earth systems and NASA's ability to observe them in a changing world, highlighting the links between dust transport, vegetation, water quality, conservation and human health, the cryosphere, and disasters.

Water in space behaves… differently. Surface tension and capillary flow can be harnessed to move fluids in more efficient ways. What looks like fun could actually help us improve systems for moving fluids in microgravity, in things like fuel tanks for space travel.

Starting around approximately 1200 - 1808 UTC (7:00 am - 1:38pm ET) November 11, 2019, NASA's Solar Dynamics Observatory watched as Mercury move across the Sun. The Solar Dynamics Observatory views the Sun in a variety of wavelengths of light in the extreme ultraviolet.

This 4K visualization shows the Moon's phase and libration at hourly intervals throughout 2022, as viewed from the Northern Hemisphere. Each frame represents one hour. In addition, this visualization shows the Moon's orbit position, sub-Earth and subsolar points, and distance from the Earth at true scale. Craters near the terminator are labeled, as are Apollo landing sites, maria, and other albedo features in sunlight.

NASA’s Solar Dynamics Observatory (SDO) has now been watching the Sun non-stop for over a full decade. From its orbit in space around the Earth, SDO has gathered 425 million high-resolution images of the Sun, amassing 20 million gigabytes of data over the past 10 years. This information has enabled countless new discoveries about the workings of our closest star and how it influences the solar system. With a triad of instruments, SDO captures an image of the Sun every 0.75 seconds. The Atmospheric Imaging Assembly (AIA) instrument alone captures images every 12 seconds at 10 different wavelengths of light. This 10-year time lapse showcases photos taken at a wavelength of 17.1 nanometers, which is an extreme ultraviolet wavelength that shows the Sun’s outermost atmospheric layer—tthe corona. Compiling one photo every hour, the movie condenses a decade of the Sun into 61 minutes. The video shows the rise and fall in activity that occurs as part of the Sun’s 11-year solar cycle and notable events, like transiting planets and eruptions. While SDO has kept an unblinking eye pointed towards the Sun, there have been a few moments it has missed. The dark frames in the video are caused by Earth or the Moon eclipsing SDO as they pass between the spacecraft and the Sun. A longer blackout in 2016 was caused by a temporary issue with the AIA instrument that was successfully resolved after a week. The images where the Sun is off-center were observed when SDO was calibrating its instruments. SDO and other NASA missions will continue to watch our Sun in the years to come, providing further insights about our place in space and information to keep our astronauts and assets safe.

While Apollo placed the first steps on the Moon, Artemis opens the door for humanity to sustainably work and live on another world for the first time. Using the lunar surface as a proving ground for living on Mars, this next chapter in exploration will forever establish our presence in the stars. ✨ We are returning to the Moon – to stay – and this is how we are going! Actress Kelly Marie Tran of “Star Wars: The Rise of Skywalker” lent her voice to this project.

Everything that happens on the International Space Station revolves around one thing: Earth, sixteen times a day! So for Earth Day 2021, NASA offers a gift you can’t get anywhere else with this leisurely view of our home planet, from 250 miles up, rendered in extraordinary ultra-high definition video. Hit play, relax and enjoy. This 4K footage was recorded between 2019 and 2020.