In 1974, science fiction author Larry Niven wrote a murder mystery with an interesting premise: could you kill a man with a tiny black hole? I won’t spoil the story, though I’m willing to bet most people would argue the answer is clearly yes. Intense gravity, tidal forces, and the event horizon would surely lead to a messy end. But it turns out the scientific answer is a bit more interesting. On the one hand, it’s clear that a large enough black hole could kill you. On the other hand, a black hole with the mass of a single hydrogen atom is clearly too small to be noticed. The real question is the critical mass. At what minimum size would a black hole become deadly? That’s the focus of a new paper on the arXiv . The study begins with primordial black holes. These are theoretical bodies that may have formed in the earliest moments of the Universe and would be much smaller than stellar-mass black holes. Anywhere from atom-massed to a mass several times that of Earth. Although astronome...
Even as the avian flu continues to affect birds and the local egg supply, health experts say eggs remain safe to eat . Commercially available eggs pass through testing, grading and inspection by the U.S. Food and Drug Administration and the U.S. Department of Agriculture , the agencies that share responsibility for the safety of eggs before they hit your plate. Federal inspections of egg farms with multiple millions of birds occur four times a year. California’s agriculture department further regulates the safety of eggs produced, shipped or sold here — ensuring they go through an industrial washing and sanitization process. All eggs sold in California from farms with 3,000 chickens or more, whether originating within or being imported from outside of this “egg-deficit” state, go through additional measures and labeling rigors implemented a decade ago to combat bacterial contamination by Salmonella enteritidis. Related Articles Science | With avian flu flying around, is it ...
By MARCIA DUNN, AP Aerospace Writer CAPE CANAVERAL, Fla. (AP) — Blue Origin launched its massive new rocket on its first test flight Thursday, sending up a prototype satellite to orbit thousands of miles above Earth. Named after the first American to orbit Earth , the New Glenn rocket blasted off from Florida, soaring from the same pad used to launch NASA’s Mariner and Pioneer spacecraft a half-century ago. Years in the making with heavy funding by Amazon founder Jeff Bezos , the 320-foot (98-meter) rocket carried an an experimental platform designed to host satellites or release them into their proper orbits. Blue Origin’s New Glenn rocket lifts off from Launch Complex 36 at the Cape Canaveral Space Force Station, Thursday, Jan. 16, 2025, in Cape Canaveral, Fla. (AP Photo/John Raoux) Blue Origin’s New Glenn rocket lifts off from Launch Complex 36 at the Cape Canaveral Space Force Station, Thursday, Jan. 16, 2025, in Cape Canaveral, Fla. (AP Pho...
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