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A burned-out stellar core produced a shockwave that pushed particles to their theoretical speed limit, scientists have reported. Astronomers used a gamma-ray observatory in Namibia called the High Energy Stereoscopic System (HESS) to show how an eruption creates a shock wave that accelerates material around it super-fast speeds. The research focused on RS Ophiuchi, a … Read more
Older adults make up a hefty proportion of cancer patients but a much smaller slice of clinical trial participants—a long-standing and vexing problem the U.S. Food and Drug Administration (FDA) wants drug companies to tackle. The agency yesterday released recommendations urging companies to boost representation of people over 65 years old, and especially over 75. … Read more
The first orbital launch of SpaceX’s Starship Mars rocket has been pushed back by at least another month. SpaceX aims to launch that milestone test mission shortly after the U.S. Federal Aviation Administration (FAA) wraps up an environmental assessment of Starbase, the South Texas site where the company builds, tests and launches Starship vehicles. That … Read more
The international scientific community has long been discussing the need to keep the far side of the moon free from human-made radio frequency intrusion. Doing so can make possible observations of the unexplored early epochs of the universe known as the dark ages and cosmic dawn, scientists say. The moon’s far side always faces away … Read more
The list of U.S. parents’ pandemic burdens this winter is longer and more chaotic than ever: More kids have been infected with the novel coronavirus, or SARS-CoV-2, despite scrupulous safety measures. Outbreaks have occurred in staff-strained schools and daycare centers. Many have faced dreaded returns to remote learning. COVID vaccine boosters remain unauthorized for most … Read more
NASA’s Ingenuity Mars helicopter has notched yet another milestone — the first weather-related flight delay on another planet. Ingenuity was scheduled to make its 19th Red Planet hop on Jan. 5. On New Year’s Day, however, a strong dust storm kicked up near Jezero Crater, which the helicopter and its robotic partner, NASA’s life-hunting Perseverance rover, … Read more
The list of U.S. parents’ pandemic burdens this winter is longer and more chaotic than ever: More kids have been infected with the novel coronavirus, or SARS-CoV-2, despite scrupulous safety measures. Outbreaks have occurred in staff-strained schools and daycare centers. Many have faced dreaded returns to remote learning. COVID vaccine boosters remain unauthorized for most … Read more