Fallstreaks, often called “hole punch clouds,” occur when conditions in a mid-or-high level cloud deck consist of supercooled water droplets — or water droplets that can actually exist as a ...
Black holes snacking on small stars create particle accelerators that bombard Earth with cosmic rays
astronomers have discovered that "microquasars," systems in which a black hole is slowly devouring a star, may be small, but they pack one heck of a punch. Despite their diminutive nature ...
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