Category Astronomy/Space

First Research results on the ‘Spectacular Meteorite Fall’ of Flensburg

The meteorite “Flensburg” in close-up view© Markus Patzek

A fireball in the sky, accompanied by a bang, amazed hundreds of eyewitnesses in northern Germany in mid-September last year. The reason for the spectacle was a meteoroid entering the Earth’s atmosphere and partially burning up. One day after the observations, a citizen in Flensburg found a stone weighing 24.5 grams and having a fresh black fusion crust on the lawn of his garden.

Dieter Heinlein, coordinator of the German part of the European Fireball Network at the German Aerospace Center in Augsburg, directly recognized the stone as a meteorite and delivered the rock to experts at the “Institut für Planetologie” at Münster University (Germany). Prof...

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ESO Telescope sees surface of Dim Betelgeuse

Betelgeuse before and after dimming
This comparison image shows the star Betelgeuse before and after its unprecedented dimming. The observations, taken with the SPHERE instrument on ESO’s Very Large Telescope in January and December 2019, show how much the star has faded and how its apparent shape has changed.
Credit:ESO/M. Montargès et al.

Using ESO’s Very Large Telescope (VLT), astronomers have captured the unprecedented dimming of Betelgeuse, a red supergiant star in the constellation of Orion. The stunning new images of the star’s surface show not only the fading red supergiant but also how its apparent shape is changing.

Betelgeuse has been a beacon in the night sky for stellar observers but it began to dim late last year...

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Hubble Embraces Spiral with Open Arms

spiral galaxy NGC 2008
The spiral galaxy NGC 2008 sits center stage, its ghostly spiral arms spreading out toward us, in this image captured by the NASA/ESA Hubble Space Telescope.

The spiral galaxy NGC 2008 sits center stage, its ghostly spiral arms spreading out toward us, in this image captured by the NASA/ESA Hubble Space Telescope.

This galaxy is located about 425 million light-years from Earth in the constellation of Pictor (the Painter’s Easel). Discovered in 1834 by astronomer John Herschel, NGC 2008 is categorized as a type Sc galaxy in the Hubble sequence, a system used to describe and classify the various morphologies of galaxies. The “S” indicates that NGC 2008 is a spiral, while the “c” means it has a relatively small central bulge and more open spiral arms...

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Globular Cluster system of NGC 4546 studied in detail

Image g′ of the central region of NGC 4546 after the subtraction of its surface brightness. Credit: Escudero et al., 2020.

Using the Gemini-South telescope, astronomers have performed a photometric study of the lenticular galaxy NGC 4546. Results of the new research provide more clues about the structure and nature of the galaxy’s globular cluster system. The study was published February 7 on arXiv.org.

Globular clusters (GCs) are collections of tightly bound stars orbiting galaxies. Astronomers perceive them as natural laboratories enabling studies on the evolution of stars and galaxies...

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