A SpaceX Falcon 9 rocket vaulted into space early Tuesday, boosting billionaire Jared Isaacman and three crewmates into orbit for a daring attempt to set a post-Apollo astronaut altitude record and to carry out the first non-government spacewalk. Wearing air-cooled SpaceX-designed suits and connected to their Crew Dragon spacecraft by umbilicals and safety tethers, Isaacman and SpaceX crew trainer Sarah …

After an exhaustive review of suspect transistors in NASA’s Europa Clipper spacecraft, NASA managers have cleared the probe for launch next month as planned on a $5.2 billion mission to find out if a suspected sub-surface ocean on Jupiter’s icy moon Europa is a habitable environment. The transistor issue cropped up in May, raising fears the scope of the Clipper’s …

Mammography facilities now have to notify patients about the density of their breasts, a step aimed at improving early detection of breast cancer. The new rule, which went into effect Tuesday, was part of updated mammography regulations outlined by theU.S. Food and Drug Administration last year. While similar laws have already been enacted in many states, includingColoradoandMinnesota, this is the …