Galaxies, galactic clusters, interacting galaxies, supernovae, stars, star clusters and other cosmic marvels.
Markarian 273 is a galaxy with a bizarre structure that vaguely resembles a toothbrush. The "handle" of the brush is about 130 thousand light-years long and is strongly indicative of a merger between two galaxies. Markarian 273 has an intense region of starburst, where 60 solar masses of new stars are born each year. The galaxy is located 500 million light-years away from Earth.
This galaxy resides 25 million light-years away and is an irregular galaxy, meaning that it - along with a quarter of all galaxies in the universe - lacks a distinct, regular appearance. Although irregular galaxies may never win a beauty prize when competing with their more symmetrical spiral and elliptical peers, astronomers consider them to be very important. Some irregular galaxies may have once fallen into one of the regular classes of the Hubble sequence, but were warped and deformed by...
Strobe-like Flashes Discovered in a Suspected Binary Protostar | Flashes of light pulsing through the nebula surrounding the protostellar object LRLL 54361 are captured in this time-coded prismatic image from NASA's Hubble Space Telescope. These surprisingly regular pulsations, recurring every 25.34 days, were discovered by NASA's Spitzer Space Telescope during a period spanning seven years of repeated observations.