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NASA’s Quiet Supersonic Jet Just Hit Another Major Milestone
X-59 flew at Mach 1.4 in preparation for debuting its quiet thump to the public.
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The Mother of All Deep Space Radio Telescopes Is Going Up in the Nevada Desert
Caltech says its Deep Synoptic Array will be larger and 100-times faster than any radio telescope ever constructed.
How Serious Is the Universe’s Expansion Problem?
The Hubble tension—a disagreement over the universe's expansion rate—has led to fears of a cosmology crisis, but is it actually that serious?
