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Astronomy news

Double dust ring test could spot migrating planets

New research by a team led by an astrophysicist at the University of Warwick has a way of finally telling whether newly forming planets are migrating within the disc of dust and gas that typically surrounds stars or whether ...

date8 hours ago in Astronomy
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What does a black hole look like?

At the center of our galaxy lies a swirling, energy-spewing supermassive black hole called Sagittarius A* or Sgr A*, for short. For billions of years, surrounding gas and dust have been falling into it. Every 10,000 years ...

dateOct 15, 2018 in Astronomy
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Active galactic nuclei and star formation

Most galaxies host a supermassive black hole (SMBH) at their nucleus. (A supermassive black hole is one whose mass exceeds a million solar-masses.) A key unresolved issue in galaxy formation and evolution is the role these ...

dateOct 15, 2018 in Astronomy
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How the seeds of planets take shape

In theoretical research that could explain everything from planet formation to outflows from stars, to even the settling of volcanic ash, Caltech researchers have discovered a new mechanism to explain how the act of dust ...

dateOct 10, 2018 in Astronomy
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The threat of centaur solar system objects for the Earth

Astrophysicists Mattia Galiazzo and Rudolf Dvorak from the University of Vienna, in collaboration with Elizabeth A. Silber (Brown University, U.S.) investigated the long-term path development of centaurs, solar system minor ...

The stuff that planets are made of

UZH researchers have analyzed the composition and structure of faraway exoplanets using statistical tools. Their analysis indicates whether a planet is Earth-like, made up of pure rock, or a water-world. The larger the planet, ...

A rare star opens a window on the beginning of time

EPFL astrophysicists actively participated in the discovery of a very rare star, which is particularly old and metal-poor. As a messenger from the distant past, it will allow the scientists to learn more about the young universe, ...

Remarkable flares from the galactic center

Sagittarius A* (Sgr A*), the supermassive black hole at the center of our Milky Way Galaxy, is 100 times closer to us than any other SMBH and therefore a prime candidate for studies of how matter radiates as it accretes onto ...

A new era in the quest for dark matter

Since the 1970s, astronomers and physicists have been gathering evidence for the presence in the universe of dark matter: a mysterious substance that manifests itself through its gravitational pull. However, despite much ...

Observations challenge cosmological theories

Recent observations have created a puzzle for astrophysicists: Since the Big Bang, fewer galaxy clusters have formed over time than were actually expected. Physicists from the university of Bonn have now confirmed this phenomenon. ...

VLA sky survey reveals first 'orphan' gamma ray burst

Astronomers comparing data from an ongoing major survey of the sky using the National Science Foundation's Karl G. Jansky Very Large Array (VLA) to data from earlier surveys likely have made the first discovery of the afterglow ...

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Pupil's brain recognizes the perfect teacher
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Regulating gene transcription using light
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Arctic ice sets speed limit for major ocean current

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