A storm rages in Jupiter's northern hemisphere. | Oct. 24, 2017 | (NASA/JPL-Caltech/SwRI/MSSS/Gerald Eichstädt/ Seán Doran)

The total solar eclipse. | Aug. 21, 2017 | (NASA/SwRI.Amir Caspi/Dan Seaton)

A magnetic field on the sun producing solar flares, a coronal mass ejection, and a solar energetic particle event. | July 5, 2017 | (NASA's Goddard Space Flight Center/SDO)

Solar evaporation ponds outside of Moab, Utah. | Aug. 9, 2017 | (NASA)

A galaxy in the small northern-hemisphere constellation of Canes Venatici, some 30 million light years from Earth. | Aug. 6, 2017 | (ESA/Hubble & NASA)

Snowy dunes on Mars. | May 21, 2017 | (NASA/JPL/University of Arizona)

Aurora borealis over Canada. | Sept. 15, 2017 | (NASA)

Starburst galaxy IC 10, about 2.2 million light years from Earth. | Aug. 11, 2017 | (NASA/CXC/UMass Lowell/S. Laycock et al.; Optical: Bill Snyder Astrophotography)

Two galaxies in their late state of merging. | Oct. 20, 2017 | (ESA/Hubble & NASA)

A "Christmas Cover" rock, found on Mars by the Curiosity rover, which contains hematite, an iron-oxide material (in purple). | Sept. 17, 2017 | (NASA/JPL-Caltech/MSSS)

Sicily's Mount Etna erupting. | March 19, 2017 | (ESA/NASA)

The Crab Nebula, a supernova remnant. | Aug. 6, 2017 | (NASA, ESA, NRAO/AUI/NSF and G. Dubner, University of Buenos Aires)