The "Science and Space" Thread #2

ekim68

Mike
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2 Red Objects Were Found in the Asteroid Belt. They Shouldn’t Be There.


Two red things are hiding in a part of the solar system where they shouldn’t be.

Scientists led by Sunao Hasegawa from JAXA, the Japanese space agency, reported in The Astrophysical Journal Letters on Monday that two objects spotted in the asteroid belt between Mars and Jupiter appear to have originated beyond Neptune. The discoveries could one day provide direct evidence of the chaos that existed in the early solar system.
 

ekim68

Mike
Joined
Jul 8, 2003
Messages
57,896

V404 Cygni: Huge rings around a black hole


This image features a spectacular set of rings around a black hole, captured using NASA's Chandra X-ray Observatory and Neil Gehrels Swift Observatory. The X-ray images of the giant rings reveal information about dust located in our galaxy, using a similar principle to the X-rays performed in doctor's offices and airports.
v404-cygni-huge-rings.jpg
 

ekim68

Mike
Joined
Jul 8, 2003
Messages
57,896

ekim68

Mike
Joined
Jul 8, 2003
Messages
57,896

Never-before-detected gravitational waves hint at dark matter


A new type of gravitational wave detector running in Western Australia has recorded two rare events that might be signals of dark matter or primordial black holes. These high-frequency gravitational waves are beyond the range of most detectors and have never been recorded before.

Gravitational waves are ripples in the very fabric of spacetime, first predicted by Einstein over a century ago but not directly detected until 2015. In the years since, dozens of detections have been made, mostly by facilities like LIGO, which can detect waves with frequencies between 7 kHz and 30 Hz. That’s in the range for waves produced by cataclysmic events like black holes and neutron stars colliding.

 

ekim68

Mike
Joined
Jul 8, 2003
Messages
57,896

James Webb Space Telescope completes its final testing phase


We don’t want to count our chickens just yet, but it looks like the James Webb Space Telescope (JWST) might actually launch in October, for real this time. The perennially delayed instrument has completed its final tests and is now being prepped for shipment to the launch facility.

Originally due to launch in 2007, the JWST underwent a drastic redesign and was given a new launch window of between 2015 and 2018. That later slipped to June 2019, then May 2020, then March 2021, and most recently to October 2021, thanks to the ongoing COVID-19 pandemic. Not to jinx it, but it’s looking like this latest launch date might actually stick.
 

ekim68

Mike
Joined
Jul 8, 2003
Messages
57,896

Japan Tests Exploding Rocket Engine for the First Time in Space


Japan’s space agency JAXA has announced that is has successfully demonstrated the operation of a “rotary detonation engine” in space, a world’s first.

Such an engine uses a series of controlled explosions that travel around a circular channel at its base. The result is a massive amount of thrust coming from a much smaller engine using significantly less fuel — a potential game changer for deep space exploration, according to JAXA.
 

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