Rare 'black widow' star system could help unlock the secrets of space-time
NASA is counting down to the 'wet dress rehearsal' for its 'Mega Moon Rocket' | US Navy sends 'electronic attack' jets to Germany: Here's how they work. | New gene-therapy gel shows promise for treating rare 'butterfly disease'
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What the heck is a "wet dress rehearsal" and what does it have to do with flying to space?
If you've never heard that term before, NASA is about to enlighten you, as it undertakes a so-called wet dress rehearsal (WDR) with a rocket bound for the moon. During a WDR, a series of pre-launch tests load a rocket with liquid, supercooled fuel; verify launch systems; and practice different countdown scenarios in preparation for liftoff. It's a process that the Artemis I mission's Orion spacecraft and Space Launch System (SLS) rocket are about to undergo while parked at Launch Pad 39B at Kennedy Space Center in Cape Canaveral, Florida, beginning on Friday (April 1) and continuing through Sunday (April 3).
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The United States has deployed six "electronic attack" aircraft to northern Europe, adding to its military forces in the region after Russia's invasion of Ukraine. They are designed to overcome enemy air defenses by crippling the radar systems that they often depend upon, giving friendly aircraft a substantial combat advantage.
The six fighter jets — EA-18G Growlers — are equipped to carry out a variety of missions, but they specialize in what's called electronic warfare — principally the jamming of enemy radar with a flood of radio-frequency waves to suppress air defenses, according to Pentagon spokesperson John Kirby.
A new gel that contains DNA shows promise in helping people with "butterfly disease," a condition in which the skin erupts in blisters when placed under the slightest pressure, even a light touch.
Researchers tested this gel-based form of gene therapy in a small trial of six adults and three children with the rare inherited disease, known by the scientific name "epidermolysis bullosa," according to a statement from Stanford Medicine.
Every 4 milliseconds, a dead star blasts a powerful beam of radiation toward our planet. Don't worry — Earth will be fine. It's the dead star's tiny companion that's in trouble.
In a new study published March 11 on the pre-print database arXiv, researchers describe this ill-fated binary star system — a rare class of celestial object known as a black widow pulsar. Just like the cannibal spider from which this type of system takes its name, the larger member of the pair seems intent on devouring and destroying its smaller companion. (In spiders, females are often larger than males.)
Two 308 million-year-old fossils show creatures caught in evolutionary limbo between two forms: lizard-like and snake-like. The animals' sinuous, serpentine bodies have no front limbs, but sport two teeny lizard legs in the back.
Scientists recently identified these unique fossils as a newfound genus and species, which they named Nagini mazonense in a new study published Monday (March 28) in the journal Nature Ecology & Evolution. The specimens represent the earliest known examples of evolutionary limb loss in amniotes — animals that produce embryos protected by an amniotic sac, a group that includes mammals, birds and reptiles.
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