Clustered Bonnet Mycena Inclinata

If Artemis 1 launches tonight I WILL end up crying. Just watching NASA Live is making me emotional.

i think this mp4 has been missing from the sitecosystem too long

5 posts!

True story. My author/journalist/landlady took a trip to the States, met up with my college student friend to be shown the US college student life, and then pushed her into putting her credit card details into her Uber app.

Then over the course of the remainder of her trip she used my friend’s card to pay for her Uber trips until the money ran out.

The kicker to this story is that she wants 10k in upfront heating gas costs for the year because of “the war”.

Why are rich people so bad at money?

had a dream where my mom tried to give our Venus fly trap a spoonful of milk and it immediately started hacking and coughing like an adult human man

Rockets, Racecars, and the Physics of Going Fast

When our Space Launch System (SLS) rocket launches the Artemis missions to the Moon, it can have a top speed of more than six miles per second. Rockets and racecars are designed with speed in mind to accomplish their missions—but there’s more to speed than just engines and fuel. Learn more about the physics of going fast:

Take a look under the hood, so to speak, of our SLS mega Moon rocket and you’ll find that each of its four RS-25 engines have high-pressure turbopumps that generate a combined 94,400 horsepower per engine. All that horsepower creates more than 2 million pounds of thrust to help launch our four Artemis astronauts inside the Orion spacecraft beyond Earth orbit and onward to the Moon. How does that horsepower compare to a racecar? World champion racecars can generate more than 1,000 horsepower as they speed around the track.

As these vehicles start their engines, a series of special machinery is moving and grooving inside those engines. Turbo engines in racecars work at up to 15,000 rotations per minute, aka rpm. The turbopumps on the RS-25 engines rotate at a staggering 37,000 rpm. SLS’s RS-25 engines will burn for approximately eight minutes, while racecar engines generally run for 1 ½-3 hours during a race.

To use that power effectively, both rockets and racecars are designed to slice through the air as efficiently as possible.

While rockets want to eliminate as much drag as possible, racecars carefully use the air they’re slicing through to keep them pinned to the track and speed around corners faster. This phenomenon is called downforce.

Steering these mighty machines is a delicate process that involves complex mechanics.

Most racecars use a rack-and-pinion system to convert the turn of a steering wheel to precisely point the front tires in the right direction. While SLS doesn’t have a steering wheel, its powerful engines and solid rocket boosters do have nozzles that gimbal, or move, to better direct the force of the thrust during launch and flight.

Racecar drivers and astronauts are laser focused, keeping their sights set on the destination. Pit crews and launch control teams both analyze data from numerous sensors and computers to guide them to the finish line. In the case of our mighty SLS rocket, its 212-foot-tall core stage has nearly 1,000 sensors to help fly, track, and guide the rocket on the right trajectory and at the right speed. That same data is relayed to launch teams on the ground in real time. Like SLS, world-champion racecars use hundreds of sensors to help drivers and teams manage the race and perform at peak levels.

Knowing how to best use, manage, and battle the physics of going fast, is critical in that final lap. You can learn more about rockets and racecars here.

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Today: Stunning ‘Connect’ chair made entirely with a 3Doodler 3D printing pen

If you thought 3Doodled Eiffel Towers were impressive, just wait till you get a look at this absolutely stunning miniature chair made using just a 3Doodler 3D pen. Created by Korean designer Jungsub Shim, the intricately designed chair is an undeniable feat for 3D printing pen art, as well as furniture design.

The 3Doodled chair, dubbed “Connect,” is made up of a complex, handmade lattice structure that is actually capable of supporting a person. So, if you thought 3D pens were only good for silly knick knacks, now might be an appropriate time to reconsider their potential. According to Shim, he worked on the chair for roughly eight hours a day for an entire two months to complete the project.

20-12-22

Brings back childhood memories of studying NASA concept art for my Space Lego projects

Behold—the space station of the future! (…from 1973)

This artist’s concept gives a cutaway view of the Skylab orbital workshop, which launched 50 years ago on May 14, 1973. Established in 1970, the Skylab Program's goals were to enrich our scientific knowledge of Earth, the sun, the stars, and cosmic space; to study the effects of weightlessness on living organisms; to study the effects of the processing and manufacturing of materials in the absence of gravity; and to conduct Earth-resource observations.

Three crews visited Skylab and carried out 270 scientific and technical investigations in the fields of physics, astronomy, and biological sciences. They also proved that humans could live and work in outer space for extended periods of time, laying the groundwork for the International Space Station.

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