The Whirlpool Galaxy (M51A or NGC 5194) and (M51B or NGC 5195, left). The Whirlpool Galaxy is a grand-design spiral galaxy, interacting with NGC 5195, a dwarg galxy. Both galaxies are located 23 ± 4 million light-years away in Canes Venatici.
NGC 1309 is a spiral galaxy of about 75,000 light-years across, located approximately 120 million light-years away in the constellation Eridanus, and is one of over 200 members of the Eridanus Group of galaxies. It is running away from us at 2136 kilometers per second.
A cultured cell from the U2OS cell line at 60-times microscopic magnification. The U2OS cell line is derived from a patient with a malignant osteosarcoma (bone cancer) and is characterized by an absence of p16, an important tumor suppressor protein.