Category Astronomy/Space

Peptides on interstellar ice: Study finds presence of water molecules is not a major obstacle for formation

Peptides on interstellar ice: Study finds presence of water molecules not a major obstacle for formation
Dr. Serge Krasnokutski, Laboratory Astrophysics and Cluster Physics group at the Max Planck Institute for Astronomy at Friedrich Schiller University Jena, investigates the formation of biomolecules under space conditions with a vacuum chamber. Credit: Jens Meyer / University of Jena

A research team led by Dr. Serge Krasnokutski from the Astrophysics Laboratory at the Max Planck Institute for Astronomy at the University of Jena had already demonstrated that simple peptides can form on cosmic dust particles. However, it was previously assumed that this would not be possible if molecular ice, which covers the dust particle, contains water—which is usually the case.

Now the team, in collaboration with the University of Poitiers, France, has discovered that the presence of water molecu...

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James Webb Space Telescope Data Pinpoint Possible Aurorae on an Old Brown Dwarf

Astronomers uncover methane emission on a cold brown dwarf

Using new observations from the James Webb Space Telescope (JWST), astronomers have discovered methane emission on a brown dwarf, an unexpected finding for such a cold and isolated world. Published in the journal Nature, the findings suggest that this brown dwarf might generate aurorae similar to those seen on our own planet as well as on Jupiter and Saturn.

More massive than planets but lighter than stars, brown dwarfs are ubiquitous in our solar neighborhood, with thousands identified. Last year, Jackie Faherty, a senior research scientist and senior education manager at the American Museum of Natural History, led a team of researchers who were awarded time on JWST to investigate 12 brown dwarfs.

Among those was CWISEP J193518.59–154620...

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Most Massive Stellar Black Hole in our Galaxy found

The image shows an artist’s impression of a massive star, shining brightly in a white-yellow colour, orbiting a stellar black hole. The star’s orbital path is elliptical, outlined faintly in blue, with the major axis oriented vertically. The black hole is only visible as a red circular outline, and is located towards the bottom of the ellipse.
Artist’s impression of the system with the most massive stellar black hole in our galaxy

Astronomers have identified the most massive stellar black hole yet discovered in the Milky Way galaxy. This black hole was spotted in data from the European Space Agency’s Gaia mission because it imposes an odd ‘wobbling’ motion on the companion star orbiting it. Data from the European Southern Observatory’s Very Large Telescope (ESO’s VLT) and other ground-based observatories were used to verify the mass of the black hole, putting it at an impressive 33 times that of the Sun.

Stellar black holes are formed from the collapse of massive stars and the ones previously identified in the Milky Way are on average about 10 times as massive as the Sun...

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Astrophysicists Solve Mystery of Heart-Shaped Feature on the Surface of Pluto

How Pluto got its heart
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Alex Parker

The mystery of how Pluto got a giant heart-shaped feature on its surface has finally been solved by an international team of astrophysicists led by the University of Bern and members of the National Center of Competence in Research (NCCR) PlanetS. The team is the first to successfully reproduce the unusual shape with numerical simulations, attributing it to a giant and slow oblique-angle impact.

Ever since the cameras of NASA’s New Horizons mission discovered a large heart-shaped structure on the surface of the dwarf planet Pluto in 2015, this “heart” has puzzled scientists because of its unique shape, geological composition, and elevation...

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