An artist’s conception shows a gas-giant planet orbiting very close to its parent star, creating searingly hot conditions on the…
While driving eastward toward the northwestern flank of “McCool Hill,” the wheels of Mars Exploration Rover Spirit churned up the…
What happens when a galaxy falls in with the wrong crowd? The irregular galaxy NGC 1427A is a spectacular example…
As spring now dawns on the Northern Hemisphere of Mars, sand dunes near the pole, as pictured above, are beginning…
Scientists Carolyn Griner, Ann Whitaker and Mary Johnston (top to bottom) are shown undergoing training at the Marshall Space Flight…
In 1787, astronomer William Herschel discovered the Eskimo Nebula, which from the ground resembles a person’s head surrounded by a…
Northern Arizona is best known for the Grand Canyon. Less widely known are the hundreds of geologically young volcanoes, at…
In 1994, during its flight, the Clementine spacecraft returned images of the Moon. In addition to the geologic mapping cameras,…
This view of one of the most dynamic and intricately detailed star-forming regions in space, located 210,000 light-years away in…
