Astrophysics

Astronomers have discovered a nearby system of exoplanets with unusually orderly orbits but disordered densities. Five of the six planets circle the star in a rare rhythmic dance called a resonance chain, while their densities are weirdly shuffled.

Curing cancer is a noble goal, but sometimes scientists just want to give octopuses ecstasy. From medical marvels to wild speculations about time travel, aliens and the end of the universe, New Atlas revisits some of 2020’s strangest science stories.

Dark matter should outnumber regular matter five to one, yet it remains frustratingly elusive. But there might be ways to spot it, and now astronomers have scanned neutron stars for telltale signals of a proposed dark matter particle called an axion.

Dark matter is currently the most widely accepted hypothesis for explaining some of the weirdness we see in the cosmos. But now astronomers have discovered evidence in over 150 galaxies for a long-standing alternative model of “modified gravity.”

Astronomers are a step closer to solving a cosmic mystery, thanks to new Hubble data. Observations show a dwarf galaxy previously found to be missing most of its dark matter is being stripped and slowly torn apart by a larger nearby galaxy.

Astronomers at Ohio State University have taken the mean temperature of cosmic gas at different distances and ages, and found that it’s roughly 10 times hotter today than it was 10 billion years ago, thanks to the evolution of galaxies and clusters.

The 2020 Nobel Prize in Physics has been awarded to Roger Penrose for his proof that black holes result from general relativity, and jointly to Reinhard Genzel and Andrea Ghez for discovering the supermassive monster at the center of the Milky Way.

Scientists have estimated the total amount of matter in the universe using a more precise method. By calculating the mass of hundreds of galaxy clusters, the team found that matter makes up around a third of the contents of the universe.

Astronomers have detected the strongest magnetic field ever observed in the universe. Studying X-ray signals from a neutron star, the team calculated that its magnetic field is tens of millions of times stronger than any created in a lab on Earth.

In recent years astronomers made the puzzling discovery of two bizarre galaxies with almost no dark matter, which should dominate them. Now, a new study has suggested an explanation for that mystery – a larger nearby galaxy is stripping it away.

The way things are in our solar system aren't always how they work elsewhere in the universe. Now, astronomers have observed a triple star system that’s warping and splitting its planetary disc into strange new shapes and multiple rings.

Exactly why and how the expansion of the universe is accelerating remains unknown. One hypothesis blames strange black-hole-like objects made of dark energy, and now astrophysicists have theorized how these objects work and where they all went.