Space Valentines: From NASA With Love

Venus, as seen from the International Space Station. Credit: NASA/JAXA

Mars, as seen by the European Space Agency's Mars Express spacecraft in November 2020. The heart feature is a dark expanse of dunes located near Mars' south pole. Credit: ESA/DLR/FU Berlin

Meteor Showers occur at regular intervals as the Earth passes through trails of dusty debris left by comets. The brilliant Perseid meteor shower is captured in this image composite. Credit: Fred Bruenjes

Enhanced color global view of Pluto, taken when NASA's New Horizons spacecraft was 280,000 miles (450,000 kilometers) away. Also shown is an enhanced color view of Pluto's largest moon, Charon, from Pluto. Credit: NASA/JHUAPL/SwRI

NASA's Solar Dynamics Observatory captured this active region on the Sun, showing energetic displays of magnetic forces at work.

Titan, Saturn's largest moon, has an atmosphere mostly made of nitrogen, just like Earth's. It also has small methane and ethane lakes, some of which are perched atop hills. Credit: NASA/JPL/University of Arizona/University of Idaho

Venus is the hottest planet in our solar system, despite being farther from the Sun than Mercury. This is due to Venus's extremely thick atmosphere. The temperature on its surface can reach 840°F (450°C)! Credit: NASA/JPL

Jupiter and its four largest moons were photographed in early March 1979 by Voyager 1 and assembled into this collage. (Not to scale.) Credit: NASA/JPL

The spinning globe of Jupiter was made from observations performed with NASA's Hubble Space Telescope. Image Credit: NASA/JPL. Jupiter Animation: NASA's Scientific Visualization Studio

Image Credit: NASA/JPL. Jupiter Animation: NASA's Scientific Visualization Studio

The solar wind is a stream of ionized gas made up primarily of protons and electrons. These energetic charged particles bombard the planets in our solar system, including Mars. Credit: NASA/MAVEN/University of Colorado/LASP/Anil Rao

The Moon completes one revolution around the Earth about every 27.3 days. Animation Credit: NASA's Scientific Visualization Studio

This view from NASA's Cassini mission shows the unique six-sided jet stream at Saturn's north pole, known as "the hexagon." Within the hexagon, a wide variety of cloud structures swirl, including a massive hurricane tightly centered on the north pole. Credit: NASA/JPL-Caltech/SSI/Hampton University