The black hole at the center of our galaxy is emitting near-constant, random light. The European Space Agency has approved astronaut candidate John McFall, making McFall the first physically disabled candidate to be cleared to fly. The risk of asteroid 2024 YR4 hitting Earth rose to more than 3 percent and then dipped down to 1.5 percent with new data—our February 12 episode explained why this risk has been changing.Recommended reading:Hear our February 12 episode about asteroid 2024 YR4: <a href="https://www.scientificamerican.com/podcast/episode/what-we-know-about-2024-yr4-the-asteroid-with-a-2-percent-chance-of-impact/">https://www.scientificamerican.com/podcast/episode/what-we-know-about-2024-yr4-the-asteroid-with-a-2-percent-chance-of-impact/</a> Read more of guest host Allison Parshall’s exceptional coverage: <a href="https://www.scientificamerican.com/author/allison-parshall/">https://www.scientificamerican.com/author/allison-parshall/</a> E-mail us at <a href="mailto:sciencequickly@sciam.com">sciencequickly@sciam.com</a> if you have any questions, comments or ideas for stories we should cover!Discover something new every day: <a href="https://www.scientificamerican.com/getsciam/?utm_source=promotion&utm_medium=podcast&utm_campaign=may24-marketing2024_subscribetext&utm_term=LP_subscribe_v1_s1_podcast">subscribe</a> to Scientific American and <a href="https://www.scientificamerican.com/account/email-preferences/?utm_source=promotion&utm_medium=podcast&utm_campaign=may24-marketing2024_signuptext&utm_term=LP_signup_v1_s1_podcast">sign up</a> for Today in Science, our daily newsletter. Science Quickly is produced by Allison Parshall, Rachel Feltman, Fonda Mwangi, Kelso Harper, Madison Goldberg, Naeem Amarsy and Jeff DelViscio. This episode was hosted by Allison Parshall. Our show is edited by Naeem Amarsy with fact-checking by Shayna Posses and Aaron Shattuck. The theme music was composed by Dominic Smith. Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

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