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.
A chicken embryo inside of an egg. By the 72 hour stage the heart is well developed and the somites, optic vesicle, tail and leg buds are visible. Fractal networks of blood vessels bring energy from the yolk and exchange carbon dioxide with oxygen in the allantois.