Backwards


Astronomy Picture of the Day: Mars in the Loop This composite of images spaced some 5 to 9 days apart, from late April (bottom right) through November 5 (top left), traces the retrograde motion of ruddy-colored Mars through planet Earth's night sky. More
Astronomy Picture of the Day: An Active Prominence on the Sun Sometimes the Sun's surface becomes a whirlwind of activity. More
Astronomy Picture of the Day: The Case of the Backwards Orbiting Asteroid Why does asteroid 2015 BZ509 orbit the Sun the backwards? More

Astronomy Picture of the Day: Mars in the Loop

This composite of images spaced some 5 to 9 days apart, from late April (bottom right) through November 5 (top left), traces the retrograde motion of ruddy-colored Mars through planet Earth's night sky.