Sternenhimmel

Like a whirl of shiny flakes sparkling in a snow globe, the NASA/ESA Hubble Space Telescope catches an instantaneous glimpse of many hundreds of thousands of stars moving about in the globular cluster M13, one of the brightest and best-known globular clusters in the northern sky. This glittering metropolis of stars is easily found in the winter sky in the constellation Hercules and can even be glimpsed with the unaided eye under dark skies. M13 is home to over 100 000 stars and located at a distance of 25 000 light-years. These stars are packed so closely together in a ball, approximately 150 light-years across, that they will spend their entire lives whirling around in the cluster. This image is a composite of archival Hubble data taken with the Wide Field Planetary Camera 2 and the Advanced Camera for Surveys. Observations from four separate science proposals taken in November 1999, April 2000, August 2005, and April 2006 were used. The image includes broadband filters that isolate light from the blue, visible, and infrared portions of the spectrum.

Von Kugelsternhaufen und anderen himmlischen Lichtgestalten

Der Sternenhimmel im Juni
04.
Jun.
2018
Dr. Felicitas Mokler
Dr. Felicitas Mokler
3 Minuten
Volkszählung in der Milchstraße

Volkszählung in der Milchstraße

Der Sternenhimmel im Mai.
30.
Apr.
2018
Dr. Felicitas Mokler
Dr. Felicitas Mokler
3 Minuten
This artist?s impression depicts a rapidly spinning supermassive black hole surrounded by an accretion disc. This thin disc of rotating material consists of the leftovers of a Sun-like star which was ripped apart by the tidal forces of the black hole. Shocks in the colliding debris as well as heat generated in accretion led to a burst of light, resembling a supernova explosion.

Schwarze Löcher und die Hawking-Strahlung

Der Sternenhimmel im April
05.
Apr.
2018
Dr. Felicitas Mokler
Dr. Felicitas Mokler
3 Minuten
Am Anfang war der Urknall

Am Anfang war der Urknall

Der Sternenhimmel im März
05.
Mar.
2018
Dr. Felicitas Mokler
Dr. Felicitas Mokler
3 Minuten
Standardkerzen im All

Standardkerzen im All

Der Sternenhimmel im Februar
02.
Feb.
2018
Dr. Felicitas Mokler
Dr. Felicitas Mokler
3 Minuten
This artist?s impression shows two tiny but very dense neutron stars at the point at which they merge and explode as a kilonova. Such a very rare event is expected to produce both gravitational waves and a short gamma-ray burst, both of which were observed on 17 August 2017 by LIGO?Virgo and Fermi/INTEGRAL respectively. Subsequent detailed observations with many ESO telescopes confirmed that this object, seen in the galaxy NGC 4993 about 130 million light-years from the Earth, is indeed a kilonova. Such objects are the main source of very heavy chemical elements, such as gold and platinum, in the Universe.

Kosmische Goldgrube

Der Sternenhimmel im Januar.

04.
Jan.
2018
Dr. Felicitas Mokler
Dr. Felicitas Mokler
3 Minuten
Der Exzentriker

Der Exzentriker

Der Sternenhimmel im Dezember
01.
Dec.
2017
Dr. Felicitas Mokler
Dr. Felicitas Mokler
3 Minuten
Sterne haufenweise

Sterne haufenweise

Der Sternenhimmel im November
07.
Nov.
2017
Dr. Felicitas Mokler
Dr. Felicitas Mokler
3 Minuten
Mit Einstein auf dem Sofa

Mit Einstein auf dem Sofa

Sternenhimmel im Oktober. Von Felicitas Mokler
06.
Oct.
2017
Dr. Felicitas Mokler
Dr. Felicitas Mokler
2 Minuten
Nebelringe

Nebelringe

Der Sternenhimmel im September
31.
Aug.
2017
Dr. Felicitas Mokler
Dr. Felicitas Mokler
2 Minuten
Schnuppenregen

Schnuppenregen

Der Sternenhimmel im August
01.
Aug.
2017
Dr. Felicitas Mokler
Dr. Felicitas Mokler
3 Minuten
Silberschimmer am Horizont

Silberschimmer am Horizont

Der Sternenhimmel im Juli
05.
Jul.
2017
Dr. Felicitas Mokler
Dr. Felicitas Mokler
3 Minuten
Tausendmal ferner als Andromeda

Tausendmal ferner als Andromeda

Der Sternenhimmel im Juni
01.
Jun.
2017
Dr. Felicitas Mokler
Dr. Felicitas Mokler
3 Minuten