Since I last covered Rodina 18 months ago a bunch of things have changed and improved. Still developed by a one man team, and still providing a seamless environment to explore. It's been available on steam early access, but you can still buy it from the developer's site. ... https://www.youtube.com/watch?v=6aS-U5OAuMQ
Betelgeuse stopped dimming in the middle of February, and now some of the first papers studying the anomalous brightness variation are starting to appear. It doesn't look like the star got cooler, there wasn't a giant starspot that lowered the output, and there wasn't a cloud of gas in the way. Instead it seems like dust is likely to be the culprit.
We have some great images by the star using the SPHERE instrument at ESO, taken by Miguel Montargès showing a darker area on the star, this shows that the dimming wasn't a global event.
There's another image from December showing the dust environment further out from the star taken by Pierre Kervell using the VISIR instrument.
However the most interesting evidence is comes from a team who did spectroscopy, trying to figure out if the star had god cooler.
I want to cover this paper by Emily M. Levesque & Philip Massey
"Betelgeuse Just Isn't That Cool: Effective Temperature Alone Cannot Explain the Recent Dimming of Betelgeuse" https://arxiv.org/abs/2002.10463
Because it offers a good explanation of how astronomers have to go about finding the temperature of stars and because Emily wrote an excellent Twitter thread explaining their process
https://twitter.com/emsque/status/1232730880478765057?s=20
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https://www.youtube.com/watch?v=mnE4RTk3MCU
Follow me on Twitter for more updates:
https://twitter.com/DJSnM
I have a discord server where I regularly turn up:
https://discord.gg/zStmKbM
If you really like what I do you can support me directly through Patreon
https://www.patreon.com/scottmanley
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https://www.youtube.com/watch?v=qdz9vcSFBqw
More than a few of you have commented on the Kesslertastic collection of debris in my low kerbal orbit and, furthermore I've had numerous requests for giant stations, moon bases, rovers and other constructs that I've generally barely touched because or time.
So, I decided to initiate a 100% reusable space program, we're going to have a reusable launcher that returns to the planet in one piece, we'll build a space station, which will become a hub of interplanetary travel. No longer will missions to distant planets be bold ventures in disposable spacecraft, instead it'll be a case of catching the right series of connecting flights to get you to your destination.
Audio problems did get fixed in this version: http://www.youtube.com/watch?v=cnMSHh9OX9Y
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https://www.youtube.com/watch?v=TaPuvkSmyOk
So those alien reapers are not to be taken lightly, at least I can't rely on every cop in the game to be a soviet super cop. However, armed my new found knowledge we're prepared for future encounters however disturbing they might be.
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https://www.youtube.com/watch?v=2YLebyTyx98
NASA has offically declared Mars Opportunity dead after trying to wake it for the last few months. The Rover exceeded its design in every way and set records for the distance it covered on another planet.
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https://www.youtube.com/watch?v=w2oFtu_KAbI
Aircraft are surprisingly difficult beasts to build and control, building a stable, flyable aircraft is surprising complicated, so this is the first of a number of tutorials on the mechanics of aircraft in KSP (and to a certain extent, reality). All we concentrate on here is the dynamics of winged aircraft, we'll look at landing gear & engines in later videos.
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https://www.youtube.com/watch?v=R-TFRnVyjso
Words by Scott, music, melody & performance by Skye, Rocket crashes provided by armies of dedicated engineers working with zero margin for error. We thank these engineers for their work and hope they embrace failure as a learning opportunity.
Every line refers to one or more specific failure of a spacecraft, sometimes quite spectacular.
Lyrics:
If your main fuel tank has sprung a leak
You will not go to space today
If your I M U is upside down
You will not go to space today
If your flight com pu ter can’t count that high
You will not go to space today
If your S R B has a hairline crack
You will not go to space today
They say space is hard
So you know that it’s ok
that your rocket just crashed into the ground
And you didn’t go to space today.
When your gy-ro-scopes hit gimbal lock
You will not go to space today
When hyd rau lic fluid gets used up
You will not go to space today
When you lose con tact with ground control
You will not go to space today
When your cab les short and gets unplugged
You will not go to space today
They say space is hard
So you know that it’s ok
that your payload simply failed to deploy
And it didn’t stay in space today.
(solo?)
RUD and FTS
will ruin any day.
Sometimes your probe will lithobrake.
Or burn up in the air……
If a helium tank just won’t stay put
You will not go you space today
If there’s Solid Oxygen in your tanks
You will not go to space today
If your turbo-pump can’t handle the load.
You will not go to space today
And sometimes politics gets in the way
and you’ll never go to space today.
Or ever for that matter…..
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https://www.youtube.com/watch?v=Ayu0GsrvKQA
We're in orbit, now we need to collect science, and then return safely to the planet, then we make some plans to do some contracts to help with the cash flow.
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https://www.youtube.com/watch?v=X3xuwY8hZ3w