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FAST in China. Photo: Ou Dongqu/Xinhua via Getty

China's Five-hundred-meter Aperture Spherical radio Telescope (FAST) began official science operations earlier this month, making it the largest operating telescope of its kind on Earth.

Why it matters: The $100 million Breakthrough Listen project is expected to survey 100 nearby galaxies, 1 million stars and the galactic plane for radio signatures that could only have been sent out by an advanced society, and FAST is expected to help.

  • Scientists have trouble parsing out exactly which signals might be from outside of our solar system and which might have been created by human activity.
  • FAST's advanced technology will help cut down on any false-positives, Breakthrough Listen scientist Vishal Gajjar told Axios.

Where it stands: FAST has already done a preliminary observation in collaboration with Breakthrough Listen, listening for signals from the planet GJ273b as a proof of concept for the telescope, Gajjar said.

  • Breakthrough Listen expects to hunt for radio signatures coming from the Andromeda galaxy and planets discovered by NASA's Transiting Exoplanet Survey Satellite using FAST, Gajjar added.
  • Breakthrough Listen and FAST also have a partnership to share information, making sure any promising looking signals are followed up on quickly.

But, but, but: Just because scientists are listening for advanced intelligent life doesn't mean it's out there, or that we can hear it.

  • While powerful telescopes like FAST aid in the hunt, it's possible that our tools simply aren't sensitive enough to pick up SETI signals yet.

Go deeper: The search for life as we don't know it

Go deeper

Biden confronts mounting humanitarian crisis at the border

Illustration: Eniola Odetunde/Axios. Photo: Pool/Getty Images     

Just over a month into his presidency, President Biden is staring down a mounting crisis at the border that could be just as bad as the ones faced by Barack Obama and Donald Trump, if not worse.

Why it matters: Immigration is an issue that can consume a presidency. It's intensely and poisonously partisan. It's complicated. And the lives and welfare of vulnerable children hang in the balance.

Erica Pandey, author of @Work
1 hour ago - Economy & Business

The rise of vaccine passports

Illustration: Annelise Capossela/Axios

Vaccine passports were touted early in the pandemic as an important piece of the plan to get people back to normal life. Now they’re becoming a reality.

Driving the news: CLEAR, the secure digital identity app that you see in airports around the world, and CommonPass, a health app that lets users securely access vaccination records and COVID test results, have joined forces.

"Vaccine tourism" stretches states' supplies

Illustration: Sarah Grillo/Axios

Americans who are highly motivated to get vaccinated are traveling across state lines after hearing about larger vaccine supplies or loopholes in sign-up systems.

Why it matters: "Vaccine tourism" raises ethical and legal questions, and could worsen the racial socioeconomic and racial inequalities of the pandemic.

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