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!

A map of the Milky Way made using the distribution of pulsing stars. Credit: J. Skowron/OGLE/Astronomical Observatory, University of Warsaw

A new 3D map of the Milky Way reveals the structure of our galaxy as never before, according to a study published this week in the journal Science.

Why it matters: By modeling the Milky Way, scientists can piece together the galaxy’s history, explaining why it looks the way it does and placing it in context with other galaxies observed around our own.

What they found: The new study confirms the Milky Way’s disk appears to be warped in an extreme way.

  • “We don't know for sure, but we think that the warp may have been caused by interactions with satellite galaxies…” Dorota Skowron, one of the study’s authors tells Axios via email. “Other possibilities point to interactions with intergalactic gas or dark matter.”
  • The team measured the distances from the Sun to more than 2,400 pulsing stars called Cepheids in order to map the galaxy from the inside out.
  • They found the Milky Way does have four arms arranged in a spiral structure, as earlier studies have suggested.

What’s next: Mapping variable stars like Cepheids on the other side of the Milky Way’s center could inform future research about the shape of our galaxy, astrophysicist Richard de Grijs, who didn’t take part in the new study, tells Axios via email.

  • If the other side of the disk is also warped “this 3D feature is most likely caused by dynamics and kinematics of the stars in the disk,” de Grijs, who recently co-authored another study mapping the galaxy with Cepheids, said.
  • “If this is only seen on one side, it may be due to the gravitational effects of or merger with a smaller ‘dwarf’ galaxy in the past.”
  • The bottom line: It isn't a complete map of the Milky Way, but it sets a foundation for understanding how our galaxy and others around it evolved.

Go deeper

6 hours ago - Politics & Policy

Kellyanne Conway's parting power pointers

Kellyanne Conway addresses the 2020 Republican National Convention. Photo: Nicholas Kamm/AFP via Getty Images

Kellyanne Conway has seen power exercised as a pollster, campaign manager and senior counselor to President Trump. Now that his term in office has concluded, she shared her thoughts with Axios.

Why it matters: If there's a currency in this town, it's power, so we've asked several former Washington power brokers to share their best advice as a new administration and new Congress settle in.

6 hours ago - Politics & Policy

GOP holdouts press on with plans to crush Cheney

Screenshot of emails to a member of Congress from individuals who signed an Americans for Limited Government petition against Rep. Liz Cheney. Photo obtained by Axios

Pro-Trump holdouts in the House are forging ahead with an uphill campaign to oust Rep. Liz Cheney as head of the chamber's Republican caucus even though Minority Leader Kevin McCarthy told them to back down.

Why it matters: What happens next will be a test of McCarthy's party control and the sincerity of his opposition to the movement. Cheney (R-Wyo.) is seen as a potential leadership rival to the California Republican.

Democrats aim to punish House GOP for Capitol riot

Speaker Nancy Pelosi passes through a newly installed metal detector at the House floor entrance Thursday. Photo: Drew Angerer/Getty Images

House Democrats plan to take advantage of corporate efforts to cut funding for Republicans who opposed certifying the 2020 election results, with a plan to target vulnerable members in the pivotal 2022 midterms for their role in the Jan. 6 violence.

Why it matters: It's unclear whether the Democrats' strategy will manifest itself in ads or earned media in the targeted races or just be a stunt to raise money for themselves. But the Capitol violence will be central to the party's messaging as it seeks to maintain its narrow majorities in Congress.