Huge system of dusty material enveloping the young star HR 4796A

This is an image from the NASA/ESA Hubble Space Telescope showing a vast, complex dust structure, about 240 billion kilometres across, enveloping the young star HR 4796A. A bright, narrow inner ring of dust is already known to encircle the star and may have been corralled by the gravitational pull of an unseen giant planet. This newly discovered huge dust structure around the system may have implications for what this yet-unseen planetary system looks like around the 8-million-year-old star, which is in its formative years of planet construction. The debris field of very fine dust was likely created from collisions among developing infant planets near the star, evidenced by a bright ring of dusty debris seen 11 billion kilometres from the star. The pressure of starlight from the star, which is 23 times more luminous than the Sun, then expelled the dust far into space.

Link:

Credit:

NASA, ESA, and G. Schneider (University of Arizona)

About the Image

NASA press release
NASA caption
Id:opo1811a
Type:Collage
Release date:9 March 2018, 13:58
Size:1600 x 1600 px

About the Object

Name:HR 4796A
Type:Milky Way : Star : Circumstellar Material : Planetary System
Distance:250 light years
Category:Exoplanets

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