Are you SURE that isn't Keith???
Eggheads identify the last animal that will survive on Earth until the Sun dies
Humans are newcomers on Earth and it's almost certain that we won't be around, on this planet at least, when the solar system's star finally goes nova. But boffins have identified at least one animal that will be. It is estimated that our star will die in about five billion years, after growing to a red giant that will most …
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Saturday 15th July 2017 10:51 GMT MrT
I'm not going to pass any comment until someone has sorted out a bowl of 1000 brown M&Ms.
I will therefore defer to the wisdom and greater understanding of Del Preston in these matters...
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Friday 14th July 2017 21:47 GMT Boris the Cockroach
The power
output of the sun is rising (well its surface temperature is)
In about 1.5 billion years time it will be enough to get earth's average temp to about 60-70 degrees c..... at which point it stops raining and all the water in the oceans ends up in the atmosphere very rapidly.
This increases the green house effect and air pressure at the surface resulting in a runaway action and earth ends up like venus.
Surface temp 400c+, pressure 90bar+
Enough to fry all life... even Keith Richards
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Saturday 15th July 2017 02:02 GMT Anonymous Coward
Re: The power
I was given to understand that it was a giant Star Goat...
Seriously tho, at the higher temps more water molecules will rise to heights where solar ultraviolet breaks the H-O-H bonds. Then the H will be not so gradually lost to space. It already happened in the case of Mars.
This effect will directly compete with increasing water vapour in our atmosphere, Don't know the rates so I can't speculate, but it might never get to the Venus stage, instead assuming the "dead baked plain" aspect so common in time travel stories.
Let's see how tuff the tardigrades are with no water, eh?
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Saturday 15th July 2017 21:36 GMT John Brown (no body)
Re: The power
output of the sun is rising (well its surface temperature is)
ISTR reading somewhere that our sun is a variable of sorts. And we've not been able to measure its temperature for long, barely an eye blink of it's current age, so is it safe to make estimates based on almost no data?
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Sunday 16th July 2017 00:43 GMT Anonymous Coward
Re: The power
"Enough to fry all life... even Keith Richards"
From past experience I wouldn't be too sure about that. I reckon KR is the real Wolverine even if his tree climbing skills are a little short of Spiderman's. He has consumed or smoked enough uppers, downers or sidewayers to dispose of a fit elephant but, like the poor, he is always with us.
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Sunday 16th July 2017 08:44 GMT Tim O'Connor
Re: The power
I read that in only 300 million years the Moon and Earth will become tidally locked and the Earth will rotate only once every 28 days - so 14 days at a time of pure darkness, followed by 14 days of nonstop sunlight! Also there will be little to no tides and major ocean currents will change radically or even cease altogether. The moon will only be visible from 1/2 of the earth and will appear in the sky at all times.
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Friday 5th April 2019 21:01 GMT HelpfulJohn
Re: The power Tidal Locking
"It will be about 50 BILLION years before the earth is tidally locked to the moon by which time neither will exist."
It is possible for the Earth to survive the Red Sol phase and even to be somewhat intact and still orbiting after the Solar "Planetary" Nebula phase and into the era of White Dwarf Sol. Earth is rather a large rock with a quite large gooey center and it will take a lot of heat and friction over a long time to kill her.
The Moon is not so sturdy. She's smaller, cooler in the middle, not made of such steely stuff and probably not destined to outlive Red Giant Sol.
The future for Earth, then, may be a dry, dead, moonless, lunar-landscape world orbiting a slowly dying ex-star for the rest of Time.
This is not a totally pessimistic ending. Life could survive it for many, many aeons. If humans invested in deep mining or hardy domes even they - or something that was descended from them - could. It wouldn't be exactly a fulfilling lifestyle full of joy ... there would be no atmosphere.
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Monday 17th July 2017 15:11 GMT Tikimon
Here's how they are so tough
Something important they left out is HOW they survive nasty things. Tardigrades in daily life are just as vulnerable as any other aquatic invertebrate. However, they can dry out to around 3% water content, going into suspended animation. In this encysted state, they can withstand gamma rays, hard vacuum, and other conditions meaning certain death to other terrestrial organism. Just add water to rehydrate them and they start foraging.
So it's plausible that encysted tardigrades might be eroded or blasted off the dying Earth. Some might survive to reach other planets or star systems. Granted it's a long shot, but improbable does not mean impossible.
And by the way, they are about the coolest thing you'll ever see through a microscope. Check out some video if you've never seen them.
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Thursday 25th April 2019 11:09 GMT SealTeam6
Re: The power
I read somewhere (in a dependable publication) that the sun is indeed becoming hotter and that in around 800 million years the hottest point of the Earth will reach 100 degrees celsius. That is enough to start the oceans boiling. That's all the time we have, but it is still a lot considering that complex life only appeared 500 million years ago.
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Friday 14th July 2017 22:58 GMT Dwarf
"Dwarf planets like Pluto and Eris might be able to, but are too far away to be a threat." - nothing like tempting fate is there :-)
Oi - Stop being sizist, Dwarf planets are just fine.
Oh and don't forget that things get smaller the further they are away from you, that doesn't mean its not a threat. Consider a Tsunami on the horizon or a freight train on the same track as you.
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Saturday 15th July 2017 11:02 GMT MrT
Things move...
"Dwarf planets like Pluto and Eris might be able to, but are too far away to be a threat." For now...
Apparently, things in the solar system got very crashtastic for a while as Jupiter spiralled inwards in the very early stages, before being flung out to where it is now by Saturn. It's one of the reasons that there are two bands in the asteroid belt, one rocky and the other icy. Horizon (DailyMotion link).
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Friday 14th July 2017 22:28 GMT redpawn
Primitive Life?
Primitive life can regenerate missing limbs because they are "primitive". We are improved. Lose even a finger or an adult tooth, too bad for you. Tardigrades seem like the ultimate primitive.
These could probably be blasted off the planet in an asteroid strike and land on another planet in another star system and survive the trip.
Too bad we aren't more "primitive".
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Saturday 15th July 2017 20:02 GMT Anonymous Coward
Re: Primitive Life?
Actually, biologically, there is nothing preventing us for regrowing lost body parts.
Other than normal development and maturity. That is, it is a biological system turned off once at a certain age/development. In our case, extremely early.
Some complex animals do retain it though https://en.wikipedia.org/wiki/Regeneration_(biology) https://en.wikipedia.org/wiki/Axolotl. If it's not beneficial/required for survival, then it is not retained/used in the animal. That does not mean it's impossible, or because it is "more developed".
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Friday 14th July 2017 22:29 GMT jake
This isn't news.
Well, I guess in geologic time it's news, but the Boffins were talking about
Keith Richardstardigrades out-surviving the proverbial cockroach in the event of a thermonuclear war when I was a kid. This was back in the early 1960s ... We studied them in elementary school. They are a nice, easy, difficult-to-kill, not dangerous, visible with minimal magnification critter seemingly made specifically for a 7 year old's science project. I called mine "The Michelin Clan". -
Friday 14th July 2017 23:43 GMT emullinsabq
maybe indirect dependence on other life forms
Life tends to need the ability to utilize energy to survive. The scenarios didn't seem to look very closely at what the environment might be like 10, 100, 1000, 10000 years later. Any life would have to be able to draw energy from that environment, or evolve that ability.
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Saturday 15th July 2017 08:06 GMT John Smith 19
I guess the question is what makes them so very hard to kill
And can you incorporate any of those mechanisms into things humans can fly in space.
Being able to shut the body down completely for a few decades sounds like it could save a lot of food mass for example, while anything that increases radiation resistance should lower shielding mass, also good if you don't happen to have a convenient sized asteroid handy.
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Saturday 15th July 2017 09:56 GMT Mystic Megabyte
Instant space travel
Inject my DNA into lots of tardigrades.
Seal them into thousands of tiny water soluble spheres.
Blast them into space in all directions.
Probability will ensure that some will land on watery planets.
After a lengthy evolution I will become conscious on my new home, instantly from *my* point of view.
The only downside is if the rich get the same idea, I could wake up on planet of the Trumps. The horror! :(
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Saturday 15th July 2017 20:11 GMT Anonymous Coward
Re: Instant space travel
Let's go even more Sci-Fi and take it to the extreme.
If we assume* the universe is infinite, then we can assume every possible arrangement of mass, energy, and thus information actually exists.
So we can conclude you are already on another planet, all types of planets, in lots of places. In fact, assuming an infinite universe, there is also a planet made entirely of millions of you!
Picture for what happens to a mind if it tries to extrapolate to infinity with insufficient information.
*here in lies the problem, and possible mistake. So don't worry about it!
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Sunday 16th July 2017 13:43 GMT Fink-Nottle
Re: Instant space travel
> the universe is infinite, then we can assume every possible arrangement of mass, energy, and thus information actually exists.
Whenever I feel sad, I take solace in the fact that somewhere in the multiverse a planet populated entirely with Jeremy Clarksons has just been vaporised by a Death Star.
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Biting the hand that feeds IT
