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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Very!

An upgrade in 1997 doubled the power of the transmitter used for planetary radar studies to one million watts and, combined with the telescope, formed the world's most powerful radar system.

This resulted in images of remarkable resolution for the time, down to 15 metres for asteroids and comets. Arecibo was sensitive enough to detect a steel golf ball at the distance of the Moon or to eavesdrop on a cell phone conversation at the distance of Venus.

Some facts (and a little history) about Arecibo | Cornell Chronicle

Ahh. Now we know why the thing hanging over it weighted 900 tons.

Still, 900 tons sounds too much. I'm with Steve on this.
 
Not long to wait now in cosmic terms, but hopefully no immediate need to put your life plans on ice! :deerman:



Estimates vary, but previous interglacial periods have lasted for around 10,000 years. Interglacial - Wikipedia

I suspect we go glacial when the ocean currents change. I was reading that the gulf stream volume is 10x all the rivers in the world. There were some figures given (can remember now) for the amount of heat energy transferred from the equatorial regions in the mid-Atlantic to the far northern latitudes and the numbers were staggering.
 
There were some figures given (can remember now) for the amount of heat energy transferred...
Did you know that rain actually heats up the atmosphere?

About 12.5 x 10^20 kJ per year of the energy absorbed by the oceans is used to evaporate water. As wind moves the water vapour (water in gaseous form) from warmer to cooler regions, the water vapour condenses back to liquid water and releases 2260 J of latent heat per gram of rain to the atmosphere.

I'll maybe find the figures to which you referred if I keep searching long enough!
 
figures ... for the amount of heat energy transferred from the equatorial regions in the mid-Atlantic to the far northern latitudes
I found the following figures buried in this article: Popular Science Monthly/Volume 20/March 1882/The Gulf Stream and the Panama Canal - Wikisource, the free online library

An estimate suggests that the Gulf Stream transfers 5,578,080,000,000 cubic feet of water per hour.

The total quantity of heat transferred from the tropics by this current would amount to 154,959,300,000,000,000,000 foot-pounds per day.

I'll leave it up to you to convert those figures into metric units, but, as they stand, they do look staggering! 😀
 
No luck with this Jupiter/Saturn thing yet. Weather is just pure cloud here at sunset. Anybody caught it yet?

902379d1608146047-universe-expanding-jupiter-saturn-conjunction-date-jpg


902378d1608146047-universe-expanding-jupiter-saturn-conjunction-jpg


Thursday might be a clear sky. Tomorrow and Sunday outside possibilities. 🙁

I was watching the Dec 9 exploding SpaceX Starship second stage:

SpaceX Starship prototype exploded, but it's still a giant leap towards Mars

SpaceX - Starship

Engines overheated in the last 10 seconds. Fuel problem. But considered a good test run. Amazing technology.
 
I found the following figures buried in this article: Popular Science Monthly/Volume 20/March 1882/The Gulf Stream and the Panama Canal - Wikisource, the free online library

An estimate suggests that the Gulf Stream transfers 5,578,080,000,000 cubic feet of water per hour.

The total quantity of heat transferred from the tropics by this current would amount to 154,959,300,000,000,000,000 foot-pounds per day.

I'll leave it up to you to convert those figures into metric units, but, as they stand, they do look staggering! 😀
A foot pound is about 0.33 Meter times 4.5 Newton.
Equal: 1.5 Joule.

You can calculate the thermal power of the Golf stream from: Watt = Joule per second. And 1 day is 86400 seconds.
 
I was watching the Dec 9 exploding SpaceX Starship second stage: SpaceX Starship prototype exploded, but it's still a giant leap towards Mars
The ingenuity of Starship is that it just “belly-flops” all the way down – a type of free fall in which the atmosphere gradually slows down its speed. As it nears the ground, it should be slow enough for a short flip-and-landing burn to touch down softly on the pad.
It can take time to perfect the belly-flop technique!
 

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