page_title: Protoplanetary disk
hierarchical_section_title: Protoplanetary disk
caption_attribution_description: English: ALMA image of the protoplanetary disc around HL Tauri - This is the sharpest image ever taken by ALMA — sharper than is routinely achieved in visible light with the NASA/ESA Hubble Space Telescope. It shows the protoplanetary disc surrounding the young star HL Tauri. These new ALMA observations reveal substructures within the disc that have never been seen before and even show the possible positions of planets forming in the dark patches within the system. About the Object Name: HL Tauri Type: • Milky Way&#160;: Star&#160;: Circumstellar Material&#160;: Disk&#160;: Protoplanetary • X - Stars Distance: 450 light years Constellation: Taurus Coordinates Position (RA): 4 31 38.37 Position (Dec): 18° 14' 0.99" Field of view: 0.03 x 0.03 arcminutes Orientation: North is 0.0° left of vertical .
context_page_description: A protoplanetary disk is a rotating circumstellar disc of dense gas and dust surrounding a young newly formed star, a T Tauri star, or Herbig Ae/Be star. The protoplanetary disk may also be considered an accretion disk for the star itself, because gases or other material may be falling from the inner edge of the disk onto the surface of the star. This process should not be confused with the accretion process thought to build up the planets themselves. Externally illuminated photo-evaporating protoplanetary disks are called proplyds.
  In July 2018, the first confirmed image of such a disk, containing a nascent exoplanet, named PDS 70b, was reported.
context_section_description: A protoplanetary disk is a rotating circumstellar disc of dense gas and dust surrounding a young newly formed  star, a T Tauri star, or Herbig Ae/Be star. The protoplanetary disk may also be considered an accretion disk for the star itself, because gases or other material may be falling from the inner edge of the disk onto the surface of the star. This process should not be confused with the accretion process thought to build up the planets themselves. Externally illuminated photo-evaporating protoplanetary disks are called proplyds.
  In July 2018, the first confirmed image of such a disk, containing a nascent exoplanet, named PDS 70b, was reported.
caption: Atacama Large Millimeter Array image of HL Tauri.[1][2]
exif: {"Image ImageDescription": "This is the sharpest image ever taken by ALMA \u2014 sharper than is routinely achieved in visible light with the NASA/ESA Hubble Space Telescope. It shows the protoplanetary disc surrounding the young star HL Tauri. These new ALMA observations reveal substructures within the disc that have never been seen before and even show the possible positions of planets forming in the dark patches within the system.", "Image Software": "Adobe Photoshop CC 2014 (Windows)"}