What is the Universe expanding into..

Do you think there was anything before the big bang?

  • I don't think there was anything before the Big Bang

    Votes: 56 12.5%
  • I think something existed before the Big Bang

    Votes: 200 44.7%
  • I don't think the big bang happened

    Votes: 54 12.1%
  • I think the universe is part of a mutiverse

    Votes: 201 45.0%

  • Total voters
    447
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You don't need hindsight to know that these pair of supporters are in for a World of Hurt:



Claret and Blue spells Aston Villa F.C. to me. 🙄

Haven't won anything for 50 years! In fact all of Birmingham's clubs are useless. 😀

Quite honestly, muckers, go 10 miles down the road and follow the "Sky Blues" aka Coventry City rather than "The Scum". It'll be more exciting. 🙂
 
Lookalikes:

Did anyone notice, as I did, the uncanny resemblance between that supporter on the left and system7? I wonder if we are related? 😀

I'll give that a bye, Steve!

Football bores me even more than mathematics!

You don't watch the right team! Follow The Sky Blues! Another entertaining relegation dogfight!

Rotherham United v Coventry City highlights - YouTube

You don't want to miss Liam Kelly's thumping 20 yard volley at 14s, drawing a miraculous save from Rotherham goalie Johannson. He tipped it onto the crossbar! 😱
 
People forget that Dogs were in Space before Humans. Laika was there before Yuri. 😀

I think Elon should include a Mutt in the Lunar landings.

The second Dog on the Moon, after TinTin's faithful Mutt Snowy!
 

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I thought I'd check out how many animals have been sent into space.

A wide variety of animals have been launched into space, including monkeys and apes, dogs, cats, tortoises, mice, rats, rabbits, birds, frogs, and insects.

The Montgolfier Brothers kicked it all off by sending a sheep, a duck and a rooster aloft in a hot air balloon to see if ground dwelling animals could survive at high altitudes (the duck was the control).

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The sad thing is that someone prior to me had searched for the answer to the question "Is Laika the dog still in space?"

Animals in space - Wikipedia
 
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OK, it may only have flown for 39.1 seconds, but the Mars Ingenuity helicopter is an amazing piece of technology.

Because the density of the atmosphere of Mars is only 1/100th that of Earth's, liftoff from Mars is equivalent to flying at 30,000m above Earth, an altitude that existing helicopters have not yet reached.

Ingenuity_Helicopter_Rotor_Blades_Unlocked_for_Flying.gif


To generate the required lift, Ingenuity's rotor blades have to rotate at 2,400 rpm compared to the 500 rpm of an Earth helicopter's main rotor blades.
 
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Very impressive! Masses 1.8kg. Flies for 90 seconds on a daily Lithium Ion battery charge. The panel on the top is a solar panel plus antenna.

Hovers at 5m and can travel 300m and return.

Mars Helicopter - NASA Mars

I was interested in how it is controlled, since it must be fairly autonomous given the time lag from Earth:

Ingenuity (helicopter) - Wikipedia

Qualcomm Snapdragon processor running Linux operating system and algorithms. Not a full AI then... but amazing that everything worked on such a complex project.
 
"Ginny" has made the second test-flight successfully. Nothing too ambitious. They are still learning. 5m up, 2m sideways and back and return to ground. 60 seconds. Filmed by "Percy". 3 more scheduled flights to go. Each more ambitious.

Nasa'''s Ingenuity helicopter makes second Mars flight - BBC News

4 astronauts on their way to the Space Station on a reused SpaceX falcon rocket and dragon capsule. Spectacular pictures:

US Dragon crewship launches to space station - BBC News

I wonder what the G-force is on take-off? Must be like someone sitting on your chest. 😱
 
I wonder what the G-force is on take-off? Must be like someone sitting on your chest. 😱
The G-force depends on the rocket's payload and a quick search reveals that, for a crew mission to the ISS, the acceleration at MECO (main engine cutoff) will be roughly 3G.

This is in the rollercoaster range rather than the 6-8G a fighter pilot experiences in a tight turn.

Astronauts say riding Falcon 9 rocket was “totally different” from the space shuttle – Spaceflight Now
 
Moxie must be some sort of electrolytic converter.

Carbon Monoxide is a good thing: Carbon monoxide - Wikipedia

I forget exactly how this was done, but you burned coal in a steam atmosphere back in the day. It made a gas known as coal gas. A mixture of Hydrogen and Carbon Monoxide. Excellent fuel if not good to breathe. This was before the duller but safer North Sea Gas. We did all sorts of things in the Chemistry Lab with Coal Gas and bunsen burners. Satisfying explosions and reducing metal oxides to pure metal. You could fill floaty balloons with it too IIRC.

A reducing agent for the technical. Also suggested as a useful fuel on Mars combined back with Oxygen. 😎
 
Did you know that Coal Gas was discovered by a Scot named Archibald Cochrane in the 1780s. Cochrane was heating coal to extract tar to help preserve ship's timbers. By heating the coal he produced gas, which he then used to illuminate his house in Culross.

The Biggar Gasworks is the only Gasworks left in Scotland. It was among the first to open in the country in 1839, and the last to close in 1973. It has been preserved as a museum.

P.S. Biggar is a rural town in South Lanarkshire.

As the locals say, "London's big, but Biggar's Biggar." 😀
 

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