What's up in

astronomy

Magnetic fields in the universe.
cosmology

The Hidden Magnetic Universe Begins to Come Into View

July 2, 2020

Astronomers are discovering that magnetic fields permeate much of the cosmos. If these fields date back to the Big Bang, they could solve a major cosmological mystery.

A magnetar.
astrophysics

A Surprise Discovery Points to the Source of Fast Radio Bursts

June 11, 2020

After a burst lit up their telescope “like a Christmas tree,” astronomers were able to finally track down the source of these cosmic oddities.

Video of hot gas falling into a supermassive black hole.
Abstractions blog

Why Are Black Holes So Bright?

April 22, 2020

And why is the black hole at the center of our own galaxy so dim?

Antares photograph.
Abstractions blog

New Wrinkle Added to Cosmology’s Hubble Crisis

February 26, 2020

A problem confronts cosmology: Two independent measurements of the universe’s expansion give incompatible answers. Now a third method, advanced by an astronomy pioneer, appears to bridge the divide.

Painting of a planet and a star.
exoplanets

New Exoplanet Search Strategy Claims First Discovery

February 18, 2020

By watching for a special kind of flare, astronomers have identified the fingerprints of an Earth-size planet orbiting a distant star.

Illustration of interstellar objects entering our solar system
Quantized Columns

The Age of Interstellar Visitors

January 29, 2020

As astronomers get better at finding the comets and asteroids of other stars, they’ll learn more about the universe and our place in it.

Saturn’s rings colored by particle size.
planetary science

Are Saturn’s Rings Really as Young as the Dinosaurs?

November 21, 2019

A surprisingly youthful estimate of the age of the rings has stirred a backlash.

Virginia Trimble at UC Irvine.
Q&A

Virginia Trimble Has Seen the Stars

November 11, 2019

How a young celebrity became one of the first female astronomers at Caltech, befriended Richard Feynman, and ended up the world’s foremost chronicler of the science of the night sky.

An illustration of a planet in front of a star.
Abstractions blog

Physics Nobel Honors Early Universe and Exoplanet Discoveries

October 8, 2019

The astronomers Michel Mayor and Didier Queloz won half of the prize for their 1995 discovery of a Jupiter-like planet orbiting a nearby star. The cosmologist James Peebles won the other half for work exploring the structure of the universe.