This image is not available for purchase in your country.

Portrait of the Dutch astronomer Jan Hendrik Oort

Portrait of the Dutch astronomer Jan Hendrik Oort

H415/0042

Rights Managed

This image is not available for purchase in your country.

Please contact your Account Manager if you have any query.

Credit

SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY

Caption

Jan Hendrik Oort. Portrait of the Dutch astronomer Jan Hendrik Oort (1900-1992). Oort did most of his work in Leiden, Netherlands, and was director of the observatory there from 1945-70. He showed that the stars nearest the centre of our Galaxy have higher angular velocities than those further out. This proved that our Galaxy was rotating. In 1951, Oort was involved in the discovery of characteristic radio emissions from interstellar hydrogen clouds. He also proposed the existence of an area of cometary material (Oort cloud) at the edge of the solar system. These lumps of ice and dust sometimes move into orbit around the Sun to form comets.

Release details

Model release not available. Property release not required.

 {{ i.shot_duration ? i.shot_duration + ' ' : '' }}{{ i.shot_uhd ? '4K ' : i.hires ? 'HD ' : '' }}{{ i.spl_number }} R{{ i.license }}

  • Add to board
  • Similar {{ mediaType(i) }}