Artist’s interpretation of the explosion of a recurrent nova, RS Ophiuchi. This is a binary star in the constellation of Ophiuchus and is approximately 5,000 light-years away. It explodes roughly every 20 years when the gas flowing from the large star that falls onto the white dwarf reaches temperatures exceeding […]

This image shows an all-sky mollweide map of the quadrupole in the distribution of galaxy spin directions. In this image, the different colors mean different statistical strength of having a cosmological quadrupole at different points in the sky. Credit: Kansas State University Research reveals asymmetry in spin directions of galaxies […]

A new, Yale-led study shows that some supermassive black holes actually thrive under pressure. It has been known for some time that when distant galaxies — and the supermassive black holes within their cores — aggregate into clusters, these clusters create a volatile, highly pressurized environment. Individual galaxies falling into […]

Astronomers using ESO telescopes have discovered giant spots on the surface of extremely hot stars hidden in stellar clusters, called extreme horizontal branch stars. This image shows an artist’s impression of what one of these stars, and its giant whitish spot, might look like. The spot is bright, takes up […]

This image shows the sparkling centerpiece of Hubble’s 25th anniversary tribute. Westerlund 2 is a giant cluster of about 3000 stars located 20,000 light-years away in the constellation Carina. Hubble’s near-infrared imaging camera pierces through the dusty veil enshrouding the stellar nursery, giving astronomers a clear view of the dense […]

It took the discovery of a new celestial phenomenon and entirely new telescope technology. Diligence, technological progress, and a little luck have together solved a 20-year mystery in the cosmos. CSIRO/Alex Cherney J. Xavier Prochaska is a professor of Astronomy & Astrophysics at the University of California, Santa Cruz. Jean-Pierre […]

New results from physicists in Bochum have challenged the Standard Model of Cosmology. “Since time immemorial people have been looking at the sky and trying to understand how much stars, planets, galaxies and other objects weigh,” says Professor Hendrik Hildebrandt, Heisenberg professor and head of the RUB research group Observational […]

Measurements of particles called B mesons deviate from predictions. Alone, each anomaly looks like a fluke, but their collective drift is more suggestive. Computer reconstruction of a collision event in the Large Hadron Collider beauty experiment. The collision produces a B meson, which subsequently decays into other particles that strike […]

A still image from a simulation of the formation of dark matter structures from the early universe until today. Gravity makes dark matter clump into dense halos, indicated by bright patches, where galaxies form. In this simulation, a halo like the one that hosts the Milky Way forms, and a […]

It isn’t an alien spaceship, but new research suggests the first known interstellar object to grace our solar system could be something even stranger. If ‘Oumuamua is, in fact, an iceberg, it would explain a lot. ILLUSTRATION: GETTY IMAGES EVER SINCE ‘OUMUAMUA was discovered in 2017, the first interstellar object detected […]