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If you see an incredible image of deep space, chances are it came from Hubble. Launched in 1990, Hubble is a telescope that orbits above Earth's atmosphere, beaming home images that have helped us solve some of the universe's greatest mysteries. Not only does NASA count Hubble as one of its most successful science missions, but it is also among the biggest advancements humans have ever made in space. The Tech That Powers Hubble Hubble orbits around Earth at about five miles per second; a complete spin takes 97 minutes. On its journey, its mirror captures light and directs it into its instruments, which then work together to provide the observation. While Hubble provides views of deep space, it doesn't magnify distant stars, alien planets and galaxies. Instead, it collects more light than the human eye can see on its own. With a telescope, the bigger the mirror, the better the vision. Hubble's mirror is 94.5 inches in diameter, which is smaller than most Earth-based telescopes. … [Read more...] about How Hubble Snaps Those Amazing Space Images

Esther Cohen is 91, vaccinated against COVID-19, and wants to play mahjong with her friends — who are also vaccinated. She asked Anthony Fauci if they could get back to their games after he spoke at the American Association for the Advancement of Science annual meeting this month. Fauci, director of the National Institute of Allergy and Infectious Diseases, said she should wait a bit longer and urged her to be patient. The Centers for Disease Control and Prevention was working on guidelines for people who’d been vaccinated because lots of people were asking the same question, he said — why get vaccinated if you can’t get back to normal? Epidemiologists say the 44 million people in the United States with at least one dose of the COVID-19 vaccine should keep wearing masks and keep their distance from others, at least for now. Some experts are worried that type of messaging is too pessimistic and undersells the vaccines . They think it could make people less interested in … [Read more...] about Reminders to stay cautious aren’t the biggest reasons for COVID-19 vaccine hesitancy