Category Astronomy/Space

Space telescope Herschel (2009-2013) allowed fascinating insight into the birth of stars. Credit: ESA

The results are important for space missions that have already been planned, such as the James Webb Space Telescope (JWST), for which temps of use < -220 °C are planned, or Space Infrared Telescope for Cosmology and Astrophysics (SPICA), for which even lower temps are envisaged.

Space holds numerous fascinating objects which we can only investigate by observing their radiation. For space telescopes such as ESA infrared observatory Herschel, whose mission is to observe radiation in the far-infrared, cooling the instruments is of importance, since the instruments themselves must not emit disturbing infrared radiation...

Astronomers from the University of Cambridge, U.K., have detected a number of narrow streams and diffuse debris clouds around 2 nearby irregular dwarf galaxies called the Magellanic Clouds. The research also implies that one of these dwarf galaxies – the Large Magellanic Cloud (LMC) could be more massive than previously thought.

“Even though a prominent gaseous stream emanating from the clouds has been known and studied for some time, no obvious stellar streams had been found until recently,” Vasily Belokurov. Belokurov, together with colleague Sergey Koposov, used the Dark Energy Survey (DES) to track down stellar debris on the outskirts of the Magellanic Clouds. They were searching for the Magellanic stellar halo substructure using blue horizontal-branch (BHB) stars as tracers...

At the center of this amazing Hubble image is the elliptical galaxy NGC 3610. Surrounding the galaxy are a wealth of other galaxies of all shapes. There are spiral galaxies, galaxies with a bar in their central regions, distorted galaxies and elliptical galaxies, all visible in the background. In fact, almost every bright dot in this image is a galaxy — the few foreground stars are clearly distinguishable due to the diffraction spikes (lines radiating from bright light sources in reflecting telescope images) that overlay their images.

At the center of this amazing Hubble image is the elliptical galaxy NGC 3610. Surrounding the galaxy are a wealth of other galaxies of all shapes...

Concept of an asteroid redirect mission (NASA)

The grizzled asteroid miner was a stock character in science fiction. Now, a couple of recent events – one legal and the other technological – have brought asteroid mining a step closer to reality. The legal step was taken when the Senate Commerce, Science and Transportation Committee passed a bill titled H.R. 2262–SPACE Act of 2015. The bill has a number of measures designed to facilitate commercial space development, including a provision that gives individuals or companies ownership of any material that they mine in outer space, a trillion-dollar market.

The technological development is a new generation of gamma-ray spectroscope that appears perfectly suited for detecting veins of gold, platinum, rare earths and other valuable material hidd...