Sirius A and B Hubble photo

Forfatter/Opretter:

NASA, ESA, H. Bond (STScI), and M. Barstow (University of Leicester)

Kredit:

http://www.spacetelescope.org/images/heic0516a/

Shortlink:

https://dkwiki.dk/b/617c

kilde:

Wikimedia Commons

størrelse:

369 x 403 Pixel (183428 Bytes)

beskrivelse:

This Hubble Space Telescope image shows Sirius A, the brightest star in our nighttime sky, along with its faint, tiny stellar companion, Sirius B. Astronomers overexposed the image of Sirius A [at centre] so that the dim Sirius B [tiny dot at lower left] could be seen. The cross-shaped diffraction spikes and concentric rings around A*, and the small ring around Sirius B, are artifacts produced within the telescope's imaging system. The two stars revolve around each other every 50 years. Sirius A, only 8.6 light-years from Earth, is the fifth closest star system known. The image was taken with Hubble's Wide Field Planetary Camera 2.

Licens:

Public domain