Torbjorn Larsson's latest activity
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TTorbjorn Larsson replied to the thread Gaia space telescope discovers 55 'runaway' careening away from stellar cluster at 80 times the speed of sound.Seems it could help with ionization, since early galaxies barely produced enough escaping photons. There are sound wave analogs in the...
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TTorbjorn Larsson replied to the thread Nearby exoplanet is a 1st-of-its-kind 'steam world,’ James Webb Space Telescope finds.GJ 9827 d is a sub-Neptune (1.98 Earth radius) just above the radius valley, but it is interesting even so. It is a complicated issue:
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TTorbjorn Larsson reacted to COLGeek's post in the thread Nearby exoplanet is a 1st-of-its-kind 'steam world,’ James Webb Space Telescope finds with
Like.
Why and who is they? Assuming such a discovery was made. Discounting that JWST could see that level of detail. -
TTorbjorn Larsson replied to the thread James Webb Space Telescope finds supernova 'Hope' that could finally resolve major astronomy debate.As far as I can see this lone data point is too uncertain to claim that it is in tension with other methods. The lower limit at 69.9...
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TTorbjorn Larsson replied to the thread We are close:' SETI astrobiologist Nathalie Cabrol on the search for life.Cabrol has made good work on extremophiles. Relevance? Astrobiology is so much more than climate modelling of habitable planets...
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TTorbjorn Larsson replied to the thread Where did Mars' atmosphere go? Scientists say it may be 'hiding in plain sight.Nice! That may solve that mystery. The induced field protects somewhat from the solar wind but the atmosphere is stripped...
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TTorbjorn Larsson reacted to Mex's post in the thread Where did Mars' atmosphere go? Scientists say it may be 'hiding in plain sight with Like.
Sure it did. We know that Mars had a much denser atmosphere than it does today because we've found iron meteorites on the surface of...
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TTorbjorn Larsson reacted to Helium3's post in the thread Record-breaking Milky Way map showcases 1.5 billion objects: 'We have changed the view of our galaxy forever with Like.
Planetary Nebula are not formed by supernova explosions. They are created by a red giant puffing off its outer atmosphere while the...
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TTorbjorn Larsson replied to the thread That's weird': James Webb Space Telescope spies a strange galaxy outshining its stars.From https://scitechdaily.com/webbs-unprecedented-discovery-potential-missing-link-to-first-stars-in-the-universe/: This comparison of...
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TTorbjorn Larsson replied to the thread Hubble Space Telescope suggests our ancient universe was surprisingly crowded with supermassive black holes.No. This work suggests the supermassive black hole seeds arose from the collapse of the first generation extra massive stars. The light...
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TTorbjorn Larsson replied to the thread Hubble Space Telescope suggests our ancient universe was surprisingly crowded with supermassive black holes.The various results on this question has now been clarified by a work that agrees with this...
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TTorbjorn Larsson reacted to Unclear Engineer's post in the thread Hubble Space Telescope suggests our ancient universe was surprisingly crowded with supermassive black holes with Like.
So, you propose that the recession rate is limited to c, approaching it asymptotically as r goes to infinity. See graph in...
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TTorbjorn Larsson replied to the thread The W boson caused a particle mystery — but scientists have cracked the case.It is a nice achievement! But for new physics the neutrino sector seems more promising, since their mass oscillations doesn't fit...
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TTorbjorn Larsson replied to the thread Earth had Saturn-like rings 466 million years ago, new study suggests.https://www.skyatnightmagazine.com/space-science/roche-limit So the Moon is 20 times further out. Even Saturn have long term rings...
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TTorbjorn Larsson replied to the thread The largest volcano on Mars may sit above a 1,000-mile magma pool. Could Olympus Mons erupt again?.Interesting finds, Let's hope they get their gravitational mapper! Olympus Mons is a shield volcano, with any eruptions tending to flow...
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