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Super-Earth orbiting Barnard's Star

Astronomers detect a super-Earth orbiting Barnard's Star, with the planet having a mass at least 3.2 times that of Earth, and orbits its host star in roughly 233 days. The exoplanet lies close to the snow line, making it inhospitable for life as we know it.

SourceESO·JournalNature·DateNov 14, 2018

IceCube neutrinos point to long-sought cosmic ray accelerator

The discovery provides evidence for a known blazar as a source of high-energy neutrinos detected by the National Science Foundation-supported IceCube observatory. The observations resolve a century-old mystery about what creates and launches cosmic rays, which are highly energetic particles that continuously rain down on Earth from space.

ESO's VLT sees `Oumuamua getting a boost

Researchers found that `Oumuamua is venting material from its surface due to solar heating, causing a tiny boost in speed. This outgassing behavior is typical for comets and contradicts the previous classification of `O'uamua as an interstellar asteroid.

SourceESO·JournalNature·DateJun 27, 2018

ALMA discovers trio of infant planets around newborn star

Using ALMA, two teams of astronomers have confirmed the presence of three infant planets around a young star, HD 163296. The planets are located at distances of approximately 12 billion and 21 billion kilometers from the star, and were identified using a novel technique that analyzes gas flow patterns within a protoplanetary disc.

SourceESO·JournalThe Astrophysical Journal Letters·DateJun 13, 2018

New and improved way to find baby planets

A team of astronomers has developed a new technique to find young extrasolar planets by analyzing the motion of gas in protoplanetary disks. The method successfully confirmed the existence of two Jupiter-mass planets around star HD 163296, providing insight into planet formation and the process that shaped our own solar system.

SourceCarnegie Institution for Science·JournalThe Astrophysical Journal Letters·DateJun 13, 2018

Ancient galaxy megamergers

Astronomers have observed gargantuan cosmic pileups, the impending collisions of young starburst galaxies, when the Universe was only half its current age. These ancient systems are thought to be building the most massive structures in the known Universe: galaxy clusters.

SourceESO·JournalNature·DateApr 25, 2018

Once upon a time, an exoplanet was discovered

The discovery of 51 Pegasi b marked a significant milestone in the search for exoplanets, with Michel Mayor and his colleague Queloz credited with the groundbreaking find. The development of better telescopes enabled this achievement, contributing to a new community of researchers exploring this field.

SourceSpringer·JournalThe European Physical Journal H·DateApr 16, 2018

Neutron-star merger yields new puzzle for astrophysicists

Astronomers studying the aftermath of a distant neutron-star merger are puzzled by the continued brightening of its afterglow, which defies initial expectations. New X-ray observations suggest a more complex emission process, potentially involving a hot 'cocoon' around a jet that shock-heated surrounding debris.

SourceMcGill University·JournalThe Astrophysical Journal Letters·DateJan 18, 2018