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ProtoJeb21

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Everything posted by ProtoJeb21

  1. While I don’t watch the films as often as I should be, considering how much of a Star Wars fan I am, I like almost all of them and would probably put Rogue One as my favorite. It’s the one I watch the most often, and it adds a ton of depth to A New Hope. That, and K-2SO may be one of the best additions to the new canon. It’s really hard to pick a second favorite out of A New Hope, The Empire Strikes Back, Return of the Jedi, The Force Awakens, and The Last Jedi (no you didn’t misread that). I’m still impressed at how well the original trilogy holds up after around forty years That said,
  2. The discovery team ran some simulations and found that it is stable for at least 100 million years, and since the system is already 3.5 billion years old, it’ll be stable for even longer.
  3. Kepler-47, the first (and so far only) multi-planet circumbinary system around two main-sequence stars, just got a whole lot more interesting with the confirmation of a much larger third planet. https://www.space.com/amp/third-alien-planet-in-tatooine-system-kepler-47.html The new planet, Kepler-47d, is roughly 7 Earth radii and orbits every 187.4 days in the inner portion of the system’s habitable zone. That makes Kepler-47 the only system with TWO circumbinary habitable zone planets, a title that is probably going to be hard to beat. However, before anyone gets excited about poten
  4. Don’t forget Gliese 876. It has two gas giants in the habitable zone (one that’s twice as massive as Jupiter), along with a Uranus-like planet and a hot Super-Earth. I’m not too sure how so many massive planets formed around such a tiny star, but since we have yet to find another similar system after twenty years, I’m going to assume Gliese 876 is a rare oddball.
  5. Something tells me the Universe does not want any Center Core to be successfully recovered.
  6. Yeah...I can see why they don’t want to pull a Dumusque with this planet. Pretty coincidental that they’re both reported in the same star system.
  7. That’s pretty cool. If it does exist, I’m inclined to believe it’s a small gas planet due to its mass likely exceeding the 6 Me threshold for terrestrial planets (which is pretty irrelevant for planets around metal-poor stars as my research has found), and its large orbit keeping it safe from the stripping of its hydrogen envelope. If not, then it could be a frozen water-dominated ice world. I’m also pretty excited about the possibility of it being directly imaged. Because of its presumably greater radius and wider separation from a closer star, it’s a better target than Barnard b. Wh
  8. Does that mean the M87 black hole is larger than originally estimated, or is it just due to gravitational lensing? EDIT: upon further reading I found that the EHT images constrained the mass to around 6.5 billion solar masses, so obviously I was wrong and it’s not bigger than expected.
  9. If they’ve managed to achieve this level of quality for the most difficult of the two black holes they targeted, then the image for Sag A* should be even better.
  10. It doesn’t really matter whether the source has political bias or not, because there’s no denying with the truth that what India did was stupid. Like I said before, they’ve already proven themselves with the Mars Orbiter Mission in 2014, and all they’ve managed to do this time was threaten the safety of everyone on the ISS.
  11. India got the bright idea the other day to shoot down one of its satellites to prove it is a “space power” (getting a probe to Mars should be enough to prove that, and they already did so in 2014). They picked a satellite in a low enough orbit so no debris would cross paths with the ISS and risk the possibility of an impact. Just take one guess about how well that went. https://www.businessinsider.com/nasa-space-junk-india-destroying-missile-threaten-international-space-station-terrible-thing-2019-4 Debris too small to be tracked were thrown into orbits exceeding the station’s
  12. I am attempting to challenge the gods
  13. And it did. Wutip is officially the first Category 5 typhoon ever recorded during February in the Northern Hemisphere.
  14. Yesterday, Typhoon Wutip broke a Northern Hemisphere record for the strongest cyclone ever recorded in the month of February, with 155 mph winds an a central pressure of 922 mbar. It then started an eyewall replacement cycle, with winds dropping down to 120 mph, but over the last ~6 hours, it has rapidly recovered. It’s officially classified as a 130 mph Cat 4 at the moment, but...just LOOK at it: That’s easily a 140-150 mph Cat 4 right there, and since favorable conditions are going to continue for a bit longer, Wutip may break its own record and reach Cat 5 intensity by the 6:00 UT
  15. Sorry, I’m not good with atmospheric modeling, but I can help you find the equilibrium temperature and insolation of an exoplanet. If the planet’s star does not have a determined luminosity already, you can calculate through (Rs/1)^2 • (Ts/5778)^4, where Rs is the star’s radius in solar units, and Ts is its temperature in Kelvin. You will also need the planet’s semi-major axis in AU, which is found through the cube root of ((P/365.25)^2 • Ms), where P is the planet’s orbital period in days, and Ms is the star’s mass in solar units. Put this information into (Ls/1) • (1/a)^2, where Ls is
  16. My post on the new RV/TESS planets is going to have to wait, as our analyses on several of them are taking much longer than I anticipated.
  17. Someone in my robotics club programmed their VEX robot to say “my battery is low, and it is getting dark out.” Their robot is also named F-bot, coincidentally enough, although I don’t think constantly playing a beloved rover’s dying message counts as paying respects.
  18. Looks like someone beat me to making that. Oh well. It’s much higher quality than anything I would be able to make. Rest in Pepperoni, Oppy.
  19. HD 48611 b I feel like it’s best to start off with a familiar planet to introduce the methodology used for all the systems I will (eventually) cover. A citizen scientist from Planet Hunters TESS, EEdiscoverer, is able to use a program called the Systemic Console to analyze archived HARPS radial velocity data to search for planets. It’s rather accurate and can provide some good estimates for the masses and eccentricities of the planets it’s able to detect. It is also very helpful for confirming TESS candidates around stars with old RV data that has been long forgotten. I will get to some o
  20. Either later tonight or tomorrow, I will make my post on K2-288 Bb, as well as several new TESS systems I’ve helped characterize. These have been confirmed via radial velocity and transit data, so decent estimates on their compositions are available. These will include an update on HD 48611 b and the HD 23472 system, as well as a few RV-only systems found by a citizen scientist on Planet Hunters TESS. EDIT: scratch that, I just realized my schedule is literally packed to the max until Saturday night. I may be able to get one system out tonight and save the rest (including Space Engine re
  21. I’m going to say no. Tau Ceti e has too many problems and is only a fair candidate for potential habitability at best, for several reasons. 1.) It may not be rocky. While it has a minimum mass of just under four Earths, if the planets are on the same inclination as the debris disk, then Tau Ceti e is somewhere around 7-8 Earth masses. Most rocky planets are no more than 5-6 Earth masses, and at that mass, Tau Ceti e has a greater chance of being a small ice giant. However, there is hope for it. Tau Ceti is very poor in metals, or any element heavier than hydrogen and helium. This actuall
  22. 59-61 F has never felt so nice. After the below-freezing temperatures over the past few weeks (with a few days getting at little over 32 F/0 C), anything around 40 F is more than welcome, and 60-63 F highs for two days in a row is an absolute blessing. Too bad it’s going to return to normal February temperatures starting tomorrow.
  23. Something like that with two ocean worlds is impossible — the planets would tear each other to pieces or collide, depending on the mass ratio between the two. However, this “shared fluid” binary scenario has been seen with closely orbiting stars, where they are so close to each other that they share some of their plasma envelopes. https://en.m.wikipedia.org/wiki/Contact_binary
  24. I don’t think so. At least, nothing has been published yet. It’ll probably take several more months at least before we get something.
  25. Sorry I didn’t do a dedicated post about K2-288Bb, and that I haven’t been around very often. I’ve been trying to sort out some things about K2-288Bb and find some more planets, while also analyzing a few TESS exoplanet candidates and preparing for other things that I’ll post about once they’re finished. Since it’s been a month now, I will finally make my K2-288Bb overview post and present some very interesting finds from Planet Hunters TESS, including multiple using the radial velocity technique. Stay tuned!
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