EverythingScience

2022-10-23 18:27:31 This is what you’ve waited for.

Journey with us through Webb’s breathtaking view of the Pillars of Creation, where scores of newly formed stars glisten like dewdrops among floating, translucent columns of gas and dust.

‍First, direct your attention to the tips of the pillars, many of which appear tinged with fiery “lava.” Here, young stars periodically shoot out jets of material that collide with the pillars, which can then form wavy patterns. Energetic hydrogen molecules create that red glow.

‍Also near the edges of the pillars are tiny red orbs. These are the baby stars of the show, only a few hundred thousand years old!

#Webb
High-res
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2022-10-20 12:01:57 What Happens if a Supervolcano Blows Up?

The Earth is a gigantic ball of semi-molten rock, with a heart of iron as hot as the surface of the Sun. Titanic amounts of heat left over from its birth and the radioactive decay of trillions of tons of radioactive elements find no escape but up. Currents of rock spanning thousands of kilometers carry this energy to the surface. Earth’s crust is the only thing in their way. It feels solid to us, but it is only a fragile barrier, an apple skin around a flaming behemoth.

True apocalypses can break through and unleash eruptions tens of times more powerful than all of our nuclear weapons combined, subjecting the climate to centuries worth of change in a single year, while drowning continents in toxic ash and gases: supervolcanoes.

How big can they get? And will they put an end to humanity?

Video (Kurzgesagt)
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2022-10-12 16:34:08 Success! NASA Knocked an Asteroid Off Course (And Now It Has a Tail)
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2022-10-01 09:00:11 A Pair of Supermassive Black Holes Could Be Fated to Collide Within 3 Years
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2022-09-29 23:44:20 ‍Here are details on the feasibility study with SpaceX to boost Hubble into a higher orbit. The non-exclusive study is designed to help the agency understand the commercial possibilities of servicing missions.
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2022-09-29 23:42:07 NASA and SpaceX have signed a space act agreement for a commercial mission to boost the Hubble Space Telescope. This will extend the lifetime of the telescope, and preclude emerging concerns about the need for costly end-of-life disposal.
SciGuySpace
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2022-09-29 19:05:34 "...Liftoff, Americans return to space as Discovery clears the tower"

34 years ago today, September 29th, 1988 at 11:37am, Space Shuttle Discovery launched on STS-26. This marked the first launch of the Shuttle since the tragic Challenger disaster in 1986.

@NASA_Nerd
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2022-09-28 22:01:05 ⁣Drone startup claims it flew its zero-emissions ion propulsion drone on 4.5-minute test flight

The drone, called Silent Ventus, uses proprietary technology to ionize the oxygen and nitrogen molecules in the surrounding air to create an "ionic wind" that propels the machine in the direction it wants to go. According to Undefined, the drone could be used for cargo.

According to Undefined, its "Air Tantrum" ionic propulsion technology produces up to 150 percent more thrust than current ion thruster technologies.

Earlier this year, the company released footage of a two-and-a-half-minute indoor flight test, saying the drone emitted 85 decibels of noise. Now, it claims it's flown a prototype for four and a half minutes, though it's only released one minute, 17 seconds of footage. The drone firm also says it achieved a noise level below 75 dB.

Watch test flight

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2022-09-28 17:13:02 Tiny Robots Have Successfully Cleared Pneumonia From The Lungs of Mice

The microbots are made from algae cells and covered with a layer of antibiotic nanoparticles. The algae provide movement through the lungs, which is key to the treatment being targeted and effective.

In experiments, the infections in the mice treated with the algae bots all cleared up, whereas the mice that weren't treated all died within three days.

The technology is still at a proof-of-concept stage, but the early signs are very promising.

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2022-09-28 10:30:17 NASA's DART spacecraft crashes into asteroid in defense test
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