Artist's concept of the star KELT-9 and the planet KELT-9b (Image NASA/JPL-Caltech)

An article published in the journal “Nature” describes the study of the planet KELT-9b. This is an extreme case of hot Jupiter, a gas giant planet like Jupiter so close to its star to be considerably heated up. KELT-9b has an estimated surface temperature in the area exposed to its star that can exceed 4,600 Kelvin, so much that its atmosphere is likely to be dissipating in space and may have a tail similar to that of comets.

Chandra Deep Field-South and illustration of a supermassive black hole (Image X-ray: NASA/CXC/Univ. of Rome/E.Pezzulli et al. Illustration: NASA/CXC/M.Weiss)

An article published in the journal “Monthly Notices of the Royal Astronomical Society” describes a research about the growth mechanisms of supermassive black holes. A team of six Italian researchers led by Edward Pezzulli, a PhD student of the National Institute for Astrophysics (INAF) in Rome proposed a model that predicts that these objects can reach masses even billions of times the Sun’s not with a steady growth but with periodic “meals” that are very quick during whith they swallow huge amounts of materials.

The Dragon space cargo ship blasting off atop a Falcon 9 rocket (Photo NASA/Bill Ingalls)

A few hours ago SpaceX Dragon spacecraft blasted off atop a Falcon 9 rocket from Cape Canaveral in its CRS-11 (Cargo Resupply Service 11) mission, also referred to as SPX-11. After just over ten minutes it separated successfully from the rocket’s last stage and went en route. This is the 11th mission for the Dragon spacecraft to resupply the International Space Station with various cargoes and then return to Earth, again with various cargoes.