"The result is a rather ethereal and fragile-looking structure, made of delicate folds of gas — very different to the nebula’s appearance in visible light," mission officials wrote in an image description Friday (April 19).
This hemispheric view of Venus was created using more than a decade of radar investigations culminating in the 1990-1994 Magellan mission, and is centered on the planet's North Pole.
This composite image is color-coded to show elevation. On Saturn, the clouds form in the shape of hexagons.
This hexagonal cloud formation, first discovered in the 1980s by the Voyager spacecraft, was photographed again in 2012 by the Cassini spacecraft.
Millions of years later these two spirals will merge -- much like the Milky Way and Andromeda will likely do billions of years from now.
Data from NASA's Chandra X-ray Observatory (purple) are shown here along with optical data from the Hubble Space Telescope (red, green, blue).
Impact craters are generally round, because the projectiles that create them push into the ground before the shockwave of the impact can explode outwards.
A recent Harvard-Smithsonian Center for Astrophysics study finds that dark matter is distributed smoothly throughout dwarf galaxies, contradicting scientists' expectations that the dark matter would be clustered at the center of these galaxies like a pit in a peach.
These findings suggest that scientists are missing something in their understanding of dark matter's mysteries.
The cluster of stars is a dwarf galaxy, which are galaxies composed of up to 99 percent dark matter and only 1 percent normal matter such as stars.
Dark matter is a mysterious, invisible substance, detectable only through its gravitational pull.