Category: cosmos

IRAS 05437+2502 – Still a little-know nebula

IRAS 05437+2502 – Still a little-know nebula

NGC 4036

NGC 4036

Window to Saturn (illustration)Image credit:…

Window to Saturn (illustration)

Image credit:NASA/JPL-Caltech/SSI/Kevin M. Gill

If you crush the Earth the size (approximate) …

If you crush the Earth the size (approximate) of a peanut, it would turn into a black hole.

A galaxy cluster, or cluster of galaxies, is…

A galaxy cluster, or cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity. They are the largest known gravitationally bound structures in the universe and were believed to be the largest known structures in the universe until the 1980s, when superclusters were discovered. One of the key features of clusters is the intracluster medium (ICM). The ICM consists of heated gas between the galaxies and has a peak temperature between 2–15 keV that is dependent on the total mass of the cluster. Galaxy clusters should not be confused with star clusters, such as open clusters, which are structures of stars within galaxies, or with globular clusters, which typically orbit galaxies. Small aggregates of galaxies are referred to as galaxy group rather than clusters of galaxies. The galaxy groups and clusters can themselves cluster together to form superclusters. source

Spiral galaxy ESO 137-001 hurtles through ma…

Spiral galaxy ESO 137-001 hurtles through massive galaxy cluster Abell 3627 some 220 million light years away. The distant galaxy is seen in this colorful Hubble/Chandra composite image through a foreground of the Milky Way’s stars toward the southern constellation Triangulum Australe. As the spiral speeds along at nearly 7 million kilometers per hour, its gas and dust are stripped away when ram pressure with the cluster’s own hot, tenuous intracluster medium overcomes the galaxy’s gravity. Evident in Hubble’s near visible light data, bright star clusters have formed in the stripped material along the short, trailing blue streaks. Chandra’s X-ray data shows off the enormous extent of the heated, stripped gas as diffuse, darker blue trails stretching over 400,000 light-years toward the bottom right. The significant loss of dust and gas will make new star formation difficult for this galaxy. A yellowish elliptical galaxy, lacking in star forming dust and gas, is just to the right of ESO 137-001 in the frame.

Image Credit: NASA, ESA, CXC

Comet Hale Bopp & Herstmonceux Observato…

Comet Hale Bopp & Herstmonceux Observatory in Sussex by Peter Bassett FRAS. Image taken in 1997. image

Universe size comparison

Universe size comparison

Dust storm covering Mars

Dust storm covering Mars

Astronomers have just assembled one of the m…

Astronomers have just assembled one of the most comprehensive portraits yet of the universe’s evolutionary history, based on a broad spectrum of observations by the Hubble Space Telescope and other space and ground-based telescopes. In particular, Hubble’s ultraviolet vision opens a new window on the evolving universe, tracking the birth of stars over the last 11 billion years back to the cosmos’ busiest star-forming period, about 3 billion years after the big bang. This photo encompasses a sea of approximately 15,000 galaxies — 12,000 of which are star-forming — widely distributed in time and space. This mosaic is 14 times the area of the Hubble Ultra Violet Ultra Deep Field released in 2014.

Credits: NASA, ESA, P. Oesch (University of Geneva), and M. Montes (University of New South Wales)