Why it matters: The JWST is designed to capture the light of some of the first galaxies that coalesced after the Big Bang, learn more about how stars form, peer into the atmospheres of alien planets and more.
The CDC on Thursday shortened the recommended isolation time for health care workers who test positive for COVID-19 from 10 days to seven days if they're asymptomatic.
Driving the news: The new guidance follows calls by health officials for the CDC to shorten its recommendation on isolation for fully vaccinated people who test positive due to concerns about the Omicron variant.
NIAID director Anthony Fauci warned Wednesday that large gatherings this holiday season are unsafe even for fully vaccinated people who've had a COVID-19 booster shot, as the Omicron variant surges across the U.S.
What he's saying: "There are many of these parties that have 30, 40, 50 people in which you do not know the vaccination status of individuals," Fauci said at a briefing. "Those are the kind of functions in the context of Omicron that you do not want to go to."
