Mars, Earth and the sun have lined up, a celestial orientation known as opposition. This particular opposition occurs at a time when the orbit of Mars takes it closest to the sun.
(Image credit: Alyson Hurt/NPR)
Mars, Earth and the sun have lined up, a celestial orientation known as opposition. This particular opposition occurs at a time when the orbit of Mars takes it closest to the sun.
(Image credit: Alyson Hurt/NPR)