EVSN: Escape Velocity Space News – Détails, épisodes et analyse

Let's take a fast-paced journey thru all that's new in space and astronomy, including Hubble, Chandra, and VIPER face cuts/cancellations, weird exoplanet orbits, Roman gains an instrument, and tales from the launch pad.

Let's take a fast-paced journey thru all that's new in space and astronomy, including how Jupiter's Great Red Spot went missing, Io's Lava Lake, Titan's coastal erosion, and this week's tales from the launch pad. We also take a close look at the discovery of the first intermediate-mass black hole in the Omega Centauri globular cluster

Earlier in March, Congress voted into place the FY2024 budgets for multiple agencies, including NASA. The agency is being asked for an overall 2% cut. Combined with inflation rates over 3%, we are looking at a fairly significant cut to the U.S. budget for space science. Dr. Pamela Gay breaks down what these cuts will affect, including people and missions, as we move forward with this already stressful fiscal year. (This episode was recorded on March 14, 2024)

As you know, our team loves volcanoes, and since we’ve been focused on Iceland for months, we brought in Dr. Melissa Scruggs (aka VolcanoDoc on Twitch) for a chat about Grindavik and all things volcanic in Iceland.

It is possible to buy stickers, sweatshirts, mugs, and other stuff and things emblazoned with the simple phrase, “We are star stuff”. This phrase was popularized by Carl Sagan, and it serves as a gentle reminder that all the complex atoms - by which I mean most everything heavier than helium - found their start either in the nuclear core of a star or in the nuclear explosions of a dying star or stars. But, as with so many things, the truth is much more complicated than the meme.

One of the unexpected realities of JWST is the discovery that we have really been asking the wrong questions in many astronomy areas. For instance: we generally asked how supermassive black holes and galaxies formed, with a basic assumption that these things happened in some interrelated process. We thought stellar mass black holes came from stars and that there might have been tiny primordial black holes that evaporated away, but that was it. Closed case. Black holes formed with all the normal structures we experience today. Except that now, JWST’s observations require us to find a way to accelerate the formation of those structures, and one way to do that is to seed the universe with black holes.

Every time I get the digital “why can’t you scientists just look at the data” lecture, I wonder what people think scientists do. All we do is look at data, and when that data tells us our understanding of the universe is wrong, we’re pretty good at accepting the data and throwing out our false understandings… even when the data makes our life a whole lot harder. Such is the case with the accelerating rate of expansion of the Universe...

Robots on Mars have a long history of exceeding all possible expectations. From Spirit and Opportunity lasting far beyond their planned 90-day missions to Ingenuity lasting 72 flights out of a planned five, these craft have become so beloved that we mourn their missions ending. Today, while we recognize NASA's Day of Remembrance, we also celebrate all the Mars missions that have done more than expected.

If you take a compass and follow its pointy little needle, you will end up in Northern Canada but not at the North Pole. If you have a boat, you'll end up on Ellesmere Island wondering where Santa is hiding. The fact that the rotational north pole of the Earth and the magnetic pole of the Earth don’t align means that if you want to actually get to the Earth’s rotational North Pole - the one the pole sticks out of on your globe - you have to look up corrections online and veer a little bit in whatever direction the correction happens to be at the moment. And if you are catching this show sometime far, far in the future, then Ellesmere Island that is true in early 2024 is likely no longer true.

From October 25, 2023: Around our parent collaboration, CosmoQuest, Halloween is, hands-down, the most beloved season of the year. Costumes are worn. Yards are decorated. We are here for all the strangers that knock on our door - the weirdos, the witches, and the oh-so-many werewolves - and there will be as much candy as we can afford given out. We know we are not the only ones. With about a week to go, we know that any day now, NASA, ESA, ESO, and others will begin releasing their spooky season images. There will be nebulae cropped with the contrast adjusted just so to reveal witches' hats, and others rotated to reveal ghosts and maybe - I can hope - a goblin or two.