Massimo Luciani

Image showing the observations of the supernova SN Refsdal. In the uppermost circle there's the possible observation happened in 1998, in the middle circe the 2015 observation and in the lowermost circle the 2014 observation

The Hubble Space Telescope allowed us to observe a supernova just during the explosion. This is due to the fact that its appearance was foretold. For the first time, the use of complex calculations related to the theory of relativity made it possible to capture the supernova nicknamed Refsdal when it exploded. It’s the first time such a feat was achieved by exploiting the gravitational lensing of that galaxy cluster MACS J1149.5 + 2223, which bent the light from that star showing the explosion several times in different areas of the sky.

Artistic representation of the ten hot Jupiters examined in this research (Image NASA, ESA, and D. Sing (University of Exeter))

An article published in the journal “Nature” describes a research that provides an explanation to the apparent scarcity of water detected on some exoplanets of the type known as hot Jupiter. These are gas giants like Jupiter but orbit very close to their stars and consequently have very high surface temperatures. An international team of astronomers used the Hubble and Spitzer space telescopes to study ten exoplanets of this kind.

The SoyuzTMA-19M spacecraft blasting off atop a Soyuz rocket (Photo ESA-Stephane Corvaja)

A few hours ago the Soyuz TMA-19M spacecraft was launched from the Baikonur Cosmodrome in Kazakhstan and after about six anx a half hours reached the International Space Station carrying Tim Peake, Yuri Malenchenko and Tim Kopra. The Soyuz used the fast path normally used but it took a bit longer than anticipated because of a problem with the automatic docking system: as a consequence, the maneuver was conducted manually.

Occator Crater in falso colors stressing the white spots (Image NASA/JPL-Caltech/UCLA/MPS/DLR/IDA)

Two studies published in the journal “Nature” offered new interesting information about the dwarf planet Ceres. Thanks to analyzes of data collected by NASA’s Dawn space probe the authors of these studies claim that the mysterious white spots are composed of salts and that on Ceres there are ammonia-rich clays. The explanations about the materials that make up the white spots may solve a mystery while the presence of ammonia creates another, linked to the origin of this dwarf planet.

Kjell Lindgren, Oleg Kononenko and Kimiya Yui (Photo NASA)

A little while ago, cosmonaut Oleg Kononenko, NASA astronaut Kjell Lindgren and JAXA astronaut Kimiya Yui returned to Earth on the Soyuz TMA-17M spacecraft, landed without problems in Kazakhstan. It was night when they landed and it was very cold so the crew that take care of assisting them was quicker than ever. They spent nearly five months on the International Space Station, where they arrived on July 23, 2015 as part of Expedition 44.