‘Devil’s’ Observatory?
Snow blankets the ground around Harqua Hala Observatory, a Sun-watching station in Arizona, in the 1920s. The station was established…
American Stonehenge
This replica of Stonehenge, the famous English archaeological site, sits above the Columbia River in Washington. It depicts what Stonehenge…
Closer and Closer
Jupiter and Saturn, the largest planets in the solar system, are moving closer and closer together in the western evening…
Pioneering Explorer
Marjorie Townsend and Bruno Rossi examine the Uhuru satellite (also known as Explorer 42) a few weeks before its launch…
Galactic Dark Zone
NGC 247 is a spiral galaxy in the Sculptor Group, one of the closest galaxy clusters to our own. It’s…
Headed for Home
A small capsule streaks into Earth’s atmosphere in this artist’s concept, bringing rocks and dirt from the surface of the…
Lunar Calendar
Newark (Ohio) Earthworks was built by the Hopewell people roughly 2,000 years ago. The complex consists of several giant geometric…
Martian Dichotomy
This elevation map shows a pronounced difference between the northern and southern hemispheres of Mars. The average elevation of the…
A Bad Day
This artist’s concept shows an asteroid plunging through Earth’s atmosphere, headed toward an impact near the coast of the Yucatan…
Beautiful Ending
The Blue Snowball Nebula is the last gasp of a dying star. The star has expelled its outer layers of…