Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

February 11, 1999

A Disk and Jet in Haro 6-5B
Credit: J. Krist (STScI), D. Padgett (IPAC/Caltech) et al., WFPC2, HST, NASA

Explanation: Planets condense from disks. Several new Hubble Space Telescope pictures of stars surrounded by disks were released earlier this week. Since the glare of the central star usually makes a surrounding disk hard to see, prior observations in radio and infrared light were used to isolate systems where the disk was edge-on, blocking much of the central starlight. One such disk system, Haro 6-5B, is shown above in false color. Here, the central disk confines the emitted light into an hourglass shape. Complex dust clouds appear dark. A powerful protruding jet is shown in green. This budding planetary system measures 0.2 light-years across. Quite possibly, our own Solar System looked like this about 5 billion years ago.

Tomorrow's picture: Lunar Close-Up

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