How Early Could Life Have Appeared In The Universe?

Comments · 2.4K

• HI

  @HistoryoftheUniverse · 3 years ago · pinned

  Go to our sponsor <a href="https://betterhelp.com/HOTU">https://betterhelp.com/HOTU</a> for 10% off your first month of therapy with BetterHelp and get matched with a therapist who will listen and help.

  183

• DO

  @DonFervo · 3 years ago (edited)

  This series is better than 99% of pay-to-view content out there, for free. Thank you so much for your effort

  780

• AR

  @artdonovandesign · 3 years ago

  It&apos;s an absolute JOY to see <br>a new &apos;History of the Universe&apos; episode appear. Thank you so much!

  684

• ME

  @Merennulli · 3 years ago

  One note - the &quot;solidified core&quot; theory for Mars has been largely abandoned because the data we now have shows it isn&apos;t. Seismology data from the InSight lander has determined that it has a fully liquid core that is much less dense than Earth&apos;s core. There is still a lot of research being done on the subject, but the current theory for why Mars had a magnetic field and lost it, based on extreme temperature and pressure experiments using the data from InSight, is a different dynamo mechanism. The iron-sulfur-hydrogen mix of Mars&apos; core originally was mixing and creating a dynamo by circulation, but it eventually settled into layers of high sulfur and low sulfur concentrations. By stratifying, the core of Mars no longer has the circulation to make a dynamo.<br><br>Earth&apos;s core by contrast has more iron, and less sulfur and hydrogen and it&apos;s divided into an inner and outer core. The inner core is solid and helps maintain the dynamo in 3 major ways. The first is by the rotation of the inner core (which is currently slowing in a long-scale cycle it&apos;s gone through before), the second is heat convection between the inner and outer core, and the third is the confining of the outer core into a shell that constrains its flow.<br><br>For anyone wondering why we believe Mars once had a magnetic field - ferrous igneous rock is magnetized when it forms in a magnetic field, and much like similar rock formations on Earth, the oldest Mars rock is similarly magnetized in a sort of &quot;fossilized magnetic field&quot; that even gives some details about the structure of the field. This is the same sort of &quot;fossilized magnetic field&quot; that lead researchers to realize the Earth&apos;s magnetic field reverses periodically.

  197

• NA

  @Naowakk · 3 years ago

  It&apos;s hard to explain how much I love this content, it&apos;s incredibly well made and well presented. Hard science with a kind of romantic touch just makes my day

  302

• WE

  @wessla · 2 years ago

  These videos with this voice is curing my depression. When I&apos;m stressed out and have anxiety I used to pop pills not to get suicidal. Now I pop an episode of History of the Universe and my mind just instantly settles and my worries dissappear. I am truly greatful for this. I hope you the best. ❤️❤️🙏

  158

• 0N

  @0neIntangible · 3 years ago

  This wouldn&apos;t be a legitimate documentary and discussion on the origins of life, unless it included the required obligatory footage of meercats at <a href="https://www.youtube.com/watch?v=FpftRRm0jfA&amp;t=536">8:56</a>.

  132

• MG

  @mgaesthetic · 3 years ago

  The quality of production for these videos is simply astounding, truly a gift on this platform. Your ability to breach into and enhance our imagination to explore these thought-provoking topics genuinely is deserving of great celebration!

  376

• DA

  @davidschilling2949 · 3 years ago

  I took an astrobiology course in college and did a presentation on the meteor &apos;fossils&apos; found discussed in this video. Microscopic balls of aligned iron were noticed, which are similar to Magnetotactic bacteria found on earth. Some &nbsp;organisms use magnetic material to orient and migrate along geomagnetic field lines. Using this mechanism they are able to find optimal oxygen gradients in the soil to thrive.

  182

• ST

  @stevenzheng5459 · 3 years ago

  <a href="https://www.youtube.com/watch?v=FpftRRm0jfA&amp;t=8">0:08</a> Giant pringles stadium

  10

• BS

  @bsouradip · 2 years ago

  <a href="https://www.youtube.com/watch?v=FpftRRm0jfA&amp;t=1182">19:42</a> amino acids aren’t building blocks of RNA/DNA, these are building blocks of proteins.

  4

• LA

  @laridd · 3 years ago

  This is great! &nbsp;Thank you. &nbsp;My students ask me sometimes, if I believe in aliens. &nbsp;I always say, &quot;Yes. &nbsp;But I just don&apos;t think they&apos;ve been here.&quot; &nbsp;I used to love Ancient Aliens, but then I became a historian and realized that we just don&apos;t give ancient cultures enough credit. &nbsp;I have often wondered, &quot;What if we are just the first one that&apos;s risen? &nbsp;Or what if intelligence only arises once in a million years?&quot; &nbsp;It&apos;s a little depressing and reminds me of the movie As Good As it Gets. &nbsp;What if we are as good as it gets? &nbsp;But then I think, we&apos;ve only searched such a small portion of the sky. &nbsp;Once scientist I in an interview with Neil Degrasse Tyson, said that of the sky, we have only searched the equivalent of a glass of sea water. &nbsp;You can&apos;t look at a glass of sea water and say that fish don&apos;t exist. &nbsp;Definitely something to wonder about. &nbsp;And be hopeful about.

  324