Day 147 of the Lower Puna Eruption, and here is a latest summary clip.
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Did life originate on Planet Earth? A Stanford colleague, Ron Bracewell, postulated that if you travel at 10% the speed of light, it is conceivable that Earth has been visited many times. He suggested that, say, 3 million years ago, some early ape was fertilized, leading to us. They could be back in a million years to check on the good done, or damage. Then, there is panspermia, the hypothesis that life happened just once by pure luck, and has been distributed throughout by space dust, asteroids, etc.
Astronauts and cosmonauts have be traveling in space since Yuri Gargarin in 1961. Only 536 people have been out there, with 12 walking on the Moon. No one yet on Mars, although Elon Musk has said that Yusaku Maezawa will join him on a planned 2023-4 launch.
Homo sapiens, though, are ill-suited for space travel. Here are 12 challenges.
Eight years ago Stephen Hawking speculated that we had to become proficient in space or face extinction. However, it is entirely possible that we are not made for long-term space travel, unless the science fiction of worm holes can be solved.
Eight years ago Stephen Hawking speculated that we had to become proficient in space or face extinction. However, it is entirely possible that we are not made for long-term space travel, unless the science fiction of worm holes can be solved.
Life on Planet Earth is precarious. Here is one list of potential hazards threatening our longevity.

- Could a solar flare wipe out civilization?
- Our Sun will in time expand and consume our planet. However, we have another few billion years before that happens.
- An asteroid killed off the dinosaurs 65 million years ago. This could happen again.
- Star system WR 104 is close enough that a gamma ray burst could destroy our ozone layer and wipe us out.
- There are one or two supernova explosions in our Milky Way Galaxy every 100 years. Betelgeuse, a red super giant is nearing the end of its life and is only around 500 light years away. However, it has been calculated that an exploding star would need to be within 50 light years to cause serious problems.
- Now that we seemed to have dodged the nuclear bullet, a future world war featuring biological weapons remains a concern. I'm reading The Sixth Extinction, a plot with possible man-made mass extinction.
So what Earth creatures are better suited?
- Tardigrades, known as water bears, are about 1 mm long and were sent into space. Most survived, some even laid eggs, and the newly-hatched young were healthy. They are found at 18,196 feet in the Himalayas, in Japanese hot springs and at the bottom of the ocean in Antarctica. In the lab, radiation doesn't seem to affect them, heat up to 150 C was no problem and being frozen to almost absolute zero was fine. They have been around for 500 million years and were reanimated after 120 years of storage in dry moss.
- Speaking of worm holes, Astro Worms, or Caenorhabditis elegans, a type of nematode, is also around 1 mm long, and can withstand 400,000 g's of gravity. Human pilots lose consciousness at 5 g. Found in soil, C. elegans lacks respiratory and circulatiory systems and brains, and eats bacteria. Most are hermaphrodites, although a few are males. This was the first multicellular organism to have its whole genome sequenced. Scientists who have studied this worm have won many Nobel prizes.
But then, what would be the point of sending these creatures to other galaxies? However, releasing AI robots could well be our legacy, for there is no reason why non-organic intelligence couldn't be our future, and we will have provided a key transition.

There has been absolutely no compelling proof that life exists anywhere else. Perhaps humanity is the first and last hope of maintaining life in the Universe. But space travel today is unnecessary, dangerous and expensive. Some day for sure, for we could well be the only intelligent life in the Universe, and it would be a shame for all of this to end forever.
From the sublime to the sordid, the third witness, brought forth by Michael Avenatti (lawyer for Stormy Daniels), is Julie Swetnick, a victim of gang-rape of the type organized by Michael Kavanaugh. He wasn't there when she suffered, but she observed him and friend, Mike, spike drinks for this purpose. I'd be surprised if the judge did not withdraw before the full Senate has a chance to vote. Then, the November 6 general election will determine the next Supreme Court justice.
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Typhoon Trami is now at 150 MPH and shows a path between Miyakojima and Naha. Then, on to Japan, where she could still be a Category 1 over Tokyo..
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