Sign up for our daily briefing

Make your busy days simpler with Axios AM/PM. Catch up on what's new and why it matters in just 5 minutes.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Denver news in your inbox

Catch up on the most important stories affecting your hometown with Axios Denver

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Des Moines news in your inbox

Catch up on the most important stories affecting your hometown with Axios Des Moines

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Minneapolis-St. Paul news in your inbox

Catch up on the most important stories affecting your hometown with Axios Twin Cities

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Tampa Bay news in your inbox

Catch up on the most important stories affecting your hometown with Axios Tampa Bay

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Charlotte news in your inbox

Catch up on the most important stories affecting your hometown with Axios Charlotte

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Illustration: Rebecca Zisser / Axios

Physicists today reported observing waves in space and time from the collision of two black holes 1.8 billion light years away. It's the fourth time in two years these ripples formed from black hole mergers have been spotted, but this time they were able to more precisely locate where the collision took place in our universe.

Why it matters: It demonstrates that three detectors — two are nearly aligned and one is not — can be used to track these events in three dimensions. Ultimately, physicists want to combine observations from these detectors with those from optical telescopes to both "see" and "hear" events like neutron stars colliding, which could explain the origins of heavy elements, and test Einstein's general theory of relativity.

What they saw: On August 14, the Laser Interferometer Gravitational-Observatory (LIGO) detectors in Washington and Louisiana along with the Virgo detector in Italy observed waves from two black holes (one 31 times the mass of the Sun and the other 25 times the mass) combining to form one 53 times larger in mass than the Sun.

They also analyzed how the gravitational waves distorted space and time. What they saw was consistent with Einstein's prediction that they would "stretch and squeeze spacetime in the plane perpendicular to their direction of travel."

Sound smart: The sum of the two colliding black holes was three solar masses more than the black hole that formed, meaning the mass of three Suns was converted into the energy of the gravitational waves.

Go deeper

Mike Allen, author of AM
53 mins ago - Economy & Business

America on borrowed time

Illustration: Aïda Amer/Axios

Economic recovery will not be linear as the world continues to grapple with the uncertainty of the pandemic.

Why it matters: Despite being propped up by an extraordinary amount of fiscal stimulus and support from central banks, the state of the global economy remains fragile.

Scoop: Gina Haspel threatened to resign over plan to install Kash Patel as CIA deputy

CIA Director Gina Haspel. Photo: Win McNamee/Getty Images

CIA Director Gina Haspel threatened to resign in early December after President Trump cooked up a hasty plan to install loyalist Kash Patel, a former aide to Rep. Devin Nunes (R-Calif.), as her deputy, according to three senior administration officials with direct knowledge of the matter.

Why it matters: The revelation stunned national security officials and almost blew up the leadership of the world's most powerful spy agency. Only a series of coincidences — and last minute interventions from Vice President Mike Pence and White House counsel Pat Cipollone — stopped it.

Updated 13 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Health: Coronavirus deaths reach 4,000 per day as hospitals remain in crisis mode — CDC warns highly transmissible coronavirus variant could become dominant in U.S. in March.
  2. Politics: Biden says, "We will manage the hell out of" vaccine distribution — Biden taps ex-FDA chief to lead Operation Warp Speed amid rollout of COVID plan — Widow of GOP congressman-elect who died of COVID-19 will run to fill his seat.
  3. Vaccine: Battling Black mistrust of the vaccines"Pharmacy deserts" could become vaccine deserts — Instacart to give $25 to shoppers who get vaccine.
  4. Economy: Unemployment filings explode againFed chair: No interest rate hike coming any time soon —  Inflation rose more than expected in December.
  5. World: WHO team arrives in China to investigate pandemic origins.