First semi-empirical test of the white dwarf mass–radius relationship using a single white dwarf via astrometric microlensing

04. 10 2022

Gravitational lensing

The Longest Delay: a 14.5 Yr Campaign to Determine the Third Time Delay in the Lensing Cluster SDSS~J1004+4112

03. 08 2022

James Webb (JWST)

First look into the deep universe with the James Webb Space telescope

NASA unveiled the first full colored image from the James Webb telescope. It shows the galaxy cluster SMACS 0723 (SMACS J0723.3-7327) which acts as a gravitational lens and magnifies light coming from behind.

10. 04 2022

Exoplanets

Kepler K2 Campaign 9: II. First space-based discovery of an exoplanet using microlensing

30. 03 2022

Space

Hubble telescope spots the most distant star ever observed: 28 billions light years

Thanks to a gravitational lens created by a massive cluster of galaxies astronomers were able to identify the most distant single star ever seen. The star nicknamed Earendel has between 50 and 500 solar masses and lies 28 billion light years away. According to a new study published in Nature magazine, the light detected by Hubble left the star when the universe was less than a billion years old (out of today's 13,8 billion years).