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(via this-territory-goes-uncharted)

1 year ago / 28 notes / reblog

nsasaki:

Combined X-Ray and Optical Images of the Crab Nebula
The Crab Nebula (catalogue designations M1, NGC 1952, Taurus A) is a supernova remnant and pulsar wind nebula in the constellation of Taurus. The nebula was observed by John Bevis in 1731; it corresponds to a bright supernova recorded by Chinese and Arab astronomers in 1054. At X-ray and gamma-ray energies above 30 KeV, the Crab is generally the strongest persistent source in the sky, with measured flux extending to above 1012 eV. Located at a distance of about 6,500 light-years (2 kpc) from Earth, the nebula has a diameter of 11 ly (3.4 pc) and expands at a rate of about 1,500 kilometers per second.
At the center of the nebula lies the Crab Pulsar, a neutron star (or spinning ball of neutrons), 28–30 km across, which emits pulses of radiation from gamma rays to radio waves with a spin rate of 30.2 times per second. The nebula was the first astronomical object identified with a historical supernova explosion. (from Wikipedia)
Credits for X-ray Image: NASA/CXC/ASU/J. Hester et al. Credits for Optical Image: NASA/HST/ASU/J. Hester et al.

1 year ago / 9 notes / reblog

wingsfortheirsmiles:

In the clouds of Rho Ophiuchi by write_adam

1 year ago / 11 notes / reblog

1 year ago / 38 notes / reblog

pedroam-bang:

NGC 4449 - An irregular galaxy in Canes Venatici was discovered by William Herschel (1788)

1 year ago / 4 notes / reblog

potpiepic:

Sirius (middle bottom, the most bright star), Canis Minor, Canis major (above) and Orion (right).
In the middle is a small piece of Milky Way. (Wikipedia)
(click on the picture for hi-res)

1 year ago / 21 notes / reblog

1 year ago / 32 notes / reblog

1 year ago / 4 notes / reblog

1 year ago / 20 notes / reblog