My TikTok On Friendship Breakups Went Viral. Here’s What We Can All Learn

China's Shenzhou 15 astronauts perform 2nd spacewalk and 1st 'fire in space' test (video)

Alzheimer’s Breakthrough As Scientists Link NAD+ Supplements to Reduced Biomarkers in the Brain

Half of all active satellites are now from SpaceX. Here’s why that may be a problem