Category Astronomy/Space

A mysterious object roughly 800 million light-years from Earth detected using gravitational wave sensors is either one of the smallest black holes or one of the la...

The young star HBC 672 is known by its nickname of Bat Shadow because of its wing-like shadow feature. The NASA/ESA Hubble Space Telescope has now observed a curious “flapping” motion in the shadow of the star’s disc for the first time. The star resides in a stellar nursery called the Serpens Nebula, about 1300 light-years away.

The Hubble Space Telescope captured a striking observation of the fledgling star’s unseen, planet-forming disc in 2018...

An experiment in recreating primordial proteins solves a long-standing riddle. What did the very first proteins look like — those that appeared on Earth around 3.7 billion years ago? Prof. Dan Tawfik of the Weizmann Institute of Science and Prof. Norman Metanis of the Hebrew University of Jerusalem have reconstructed protein sequences that may well resemble those ancestors of modern proteins, and their research suggests a way that these primitive proteins could have progressed to forming living cells. Their findings were published in the Proceedings of the National Academy of Sciences (PNAS).

The proteins encoded in a cell’s genet...

Researchers have discovered what is either the heaviest known neutron star, or the lightest black hole. When the most massive stars die, they collapse under their own gravity and leave behind black holes; when stars that are a bit less massive die, they explode in supernovas and leave behind dense, dead remnants of stars called neutron stars...