Category: hubble

Hubble Space Telescope Image of Globular Cluster NGC 6397

Credit: NASA, ESA, and H. Richer (University of British Columbia)

Hubble Space Telescope Image of Globular Cluster NGC 6397

Credit: NASA, ESA, and H. Richer (University of British Columbia)

Globular cluster: Messier 4

Credit: NASA/ESA, Hubble

Hubble sees the brightest quasar in the early Universe

Astronomers using data from the NASA/ESA Hubble Space Telescope have discovered the brightest quasar ever seen in the early Universe — the light received from the object started its journey when the Universe was only about a billion years old.

Quasars are the extremely bright nuclei of active galaxies. The powerful glow of a quasar is created by a supermassive black hole which is surrounded by an accretion disc. Gas falling toward the black hole releases incredible amounts of energy, which can be observed over all wavelengths.

The newly discovered quasar, catalogued as J043947.08+163415.7, is no exception to this; its brightness is equivalent to about 600 trillion Suns and the supermassive black hole powering it is several hundred million times as massive as our Sun.

Despite its brightness Hubble was able to spot it only because its appearance was strongly affected by strong gravitational lensing. A dim galaxy is located right between the quasar and Earth, bending the light from the quasar and making it appear three times as large and 50 times as bright as it would be without the effect of gravitational lensing. Even still, the lens and the lensed quasar are extremely compact and unresolved in images from optical ground-based telescopes. Only Hubble’s sharp vision allowed it to resolve the system.

The data show not only that the supermassive black hole is accreting matter at an extremely high rate but also that the quasar may be producing up to 10 000 stars per year. read more

Looking like an elegant abstract art piece painted by talented hands, this picture is actually a NASA/ESA Hubble Space Telescope image of a small section of the Carina Nebula.

Credit: ESA/Hubble & NASA

The Sombrero Galaxy in Infrared 

Credit: R. Kennicutt (Steward Obs.) et al., SSC, JPL, Caltech, NASA

Image of the planet Uranus observed by the Hubble Space Telescope

Credit: NASA/ESA, M. Showalter (Stanford University/NASA/ESA Ames Research Center), J. Lissauer (NASA/ESA Ames Research Center)

De Mairan’s Nebula (M43) taken by the Wide Field Channel of Hubble’s Advanced Camera for Surveys.

Credit:

ESA/Hubble & NASA

Remnants from a star that exploded thousands of years ago created a
celestial abstract portrait, as captured in this NASA Hubble Space
Telescope image of the Pencil Nebula.

Credit: NASA and The Hubble Heritage Team (STScI/AURA)

This image is a composite of observations made of Saturn in early 2018 in the optical and of the auroras on Saturn’s north pole region, made in 2017

Credit: ESA/Hubble, NASA, A. Simon (GSFC) and the OPAL Team, J. DePasquale (STScI), L. Lamy (Observatoire de Paris)