Artist's impression of Proxima-b orbiting its star. Photo: ESO/M. Kornmesser

Proxima-b, a planet orbiting Proxima Centauri, a red star only 4 light-years from Earth, could support life despite being bombarded by high levels of radiation, according to new research.

What they found: While the amount of radiation bathing Proxima-b today is extreme by our current standards, that may not have been the case for Earth 4 billion years ago. Early in its history, our planet was blasted with more radiation than Proxima-b, and life still managed to develop.

What they did: The study modeled the radiation environments of planets orbiting red dwarf stars that are typically the source of extreme radiation.

  • According to the study, Proxima-b is bombarded with more than 200 times the X-ray radiation that Earth receives today.
  • That level of radiation was thought to mean certain death for living things on the world’s surface.

What they're saying: "The chances of finding life close to us around the closest stars that happen to be red young suns is much greater now, and so our quest to figure out whether we’re alone in the universe just got a tiny bit easier," Lisa Kaltenegger, one of the authors of the new study, said in a video.

Why it matters: Small, red stars are plentiful in our part of space, so if radiation isn't a dealbreaker for habitability, some of those relatively nearby worlds could host life, and it would make them candidates for followup study.

Go deeper: The interstellar object Oumuamua is almost certainly not an alien spaceship

Go deeper

Trump's Tucker mind-meld

Photo illustration: Sarah Grillo/Axios. Photo: Roy Rochlin/Getty Images and BRENDAN SMIALOWSKI/AFP via Getty Images

If you want to understand the rhetorical roots of Trump's Independence Day speech at Mount Rushmore, go back and watch Tucker Carlson's monologues for the past six weeks.

Between the lines: Trump — or rather his speechwriter Stephen Miller — framed the president's opposition to the Black Lives Matter protest movement using the same imagery Carlson has been laying out night after night on Fox.

Updated 2 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Aïda Amer/Axios

  1. Global: Total confirmed cases as of 6 p.m. ET: 11,366,145 — Total deaths: 532,644 — Total recoveries — 6,154,138Map.
  2. U.S.: Total confirmed cases as of 6 p.m. ET: 2,874,396 — Total deaths: 129,870 — Total recoveries: 906,763 — Total tested: 35,512,916Map.
  3. States: Photos of America's pandemic July 4 ICU beds in Arizona hot spot near capacity — Houston mayor warns about hospitals
  4. Public health: U.S. coronavirus infections hit record highs for 3 straight days.
  5. Politics: Former Trump official Tom Bossert says face masks “are not enough”
  6. World: Mexican leaders call for tighter border control as infections rise in U.S.
  7. Sports: Sports return stalked by coronavirus
  8. 1 📽 thing: Drive-in movie theaters are making a comeback.

Bolton's hidden aftershocks

Photo illustration: Sarah Grillo/Axios. Photo: Justin Sullivan/Getty Images

The news media has largely moved on, but foreign government officials remain fixated on John Bolton's memoir, "The Room Where It Happened."

Why it matters: Bolton's detailed inside-the-Oval revelations have raised the blood pressure of allies who were already stressed about President Trump's unreliability.