Posts

Showing posts with the label physics

Supernova Remnant Cassiopeia A: Cool Images of Hot Gas

Image
That's more than just a pretty picture. Well, part of a pretty picture. It's our latest look at the Cassiopeia A supernova remnant. Webb's high-resolution cameras are showing details that scientists have never seen before.... ...That's what I started talking about this week. But the Cassiopeia A supernova's underwhelming appearance, or maybe non-appearance, reminded me of famines, coffeehouses, and other malign menaces. So here's what I had, Friday afternoon: Spotting an Invisible Supernova, Coffeehouses, — [disconnecting] [reconnecting] — Flamsteed's Star, and Another Supernova Four Ways Stars Explode: a NASA/JPL (very) Short Video Cassiopeia A: Might have been a FELT Transposing the Invisible: Infrared Astronomy Cosmic Scale and a 15-inch Telescope "...To Follow Knowledge like a Sinking Star...." "On to God!" — "Truth Cannot Contradict Truth" More at A Catholic Citizen in America . (Latest NIRCam image from

Double Jupiters, a JuMBO Puzzle; Antimatter Falls Down

Image
Every time we develop new tech for studying this universe, we find something new. New to us, that is. This week, I'll be talking about unexpected Jupiter-size objects in the Orion Nebula, and why scientists at CERN dropped a few hundred antihydrogen atoms. Baffling Binaries, Planetary Problem: JuMBOs in Orion Low Expectations, a Pleasant Surprise A Planet by Any Other Name JuMBOs and Questions Antimatter, Gravity, the Universe: and an Experiment at CERN A Quick Look at Antimatter, From Hicks to Dirac, and Weirdness (Most) Antihydrogen Atoms Fell Down Mystery of the Missing Antimatter 'Where's the Antimatter?' — Broadening the Search Ptolemy, C. S. Lewis, the Universe, and Assumptions "...Its Inhabitants Like Grasshoppers...." More at A Catholic Citizen in America . (Unexpected Jupiter-size binaries in the Trapezium Cluster, antimatter and gravity experiment at CERN. New data, new puzzles.)

TRAPPIST-1 and the Mysterious Pea Pod Planets

Image
There may have been times when one generation's world was much like another's. This is not one of those times. Science textbooks of my youth included speculation that Earth's mountains exist because our planet has been cooling and shrinking. One of my geology professors didn't "believe in" continental drift, and that's another topic. Back then, we knew that planets orbit our star, but weren't sure how the star we call the Sun and the Solar System formed. We still don't, for that matter. Not for sure. But the nebular hypothesis, or something very much like it, is a pretty good fit with observations. I'll get back to that, and some of what we've been learning about planetary systems: including TRAPPIST-1 and its seven worlds. More at A Catholic Citizen in America . (New planetary system pattern discovered. TRAPPIST-1 worlds. Solar System formation and evolution ideas, from Descartes to pulsar planets. Psalms 115:3.)

TRAPPIST-1 b Measured by Webb: Hot, Airless

Image
The TRAPPIST-1 planetary system is news again, this time because we've taken the innermost planet's temperature. That, by itself, isn’t newsworthy. We've been using infrared observations to learn how hot exoplanets are at least since 2006. 1 What makes the latest observations special is that they’re the first time scientists have measured a comparatively small, cool exoplanet's temperature.That's what I'll be talking about this week, along with whatever else comes to mind. Top Three Multiplanetary Systems Solar System Kepler-90 Planetary System, Upsilon Andromedae d and back to TRAPPIST-1 Taking TRAPPIST-1 b's Temperature With Webb’s MIRI Blackbody Radiation, Red Stars and Astronomical Art Thermal Radiation and the Ultraviolet Catastrophe! Star Light, Star Not-So-Bright Coming Next Week: Possible Interiors of TRAPPIST-1's Planets More at A Catholic Citizen in America . (JWST takes temperature of TRAPPIST-1 b: the first detection of
Image
(From NASA, ESA, CSA, STScI; used w/o permission.) (The Cartwheel galaxy group, 500,000 light-years out, in the constellation Scorpius. (James Webb Space Telescope image released by NASA (August 2, 2022)) I'll be looking at some of the first pictures sent back from the James Webb Space Telescope, starting with the Cartwheel Galaxy. More at A Catholic Citizen in America . New views of the Cartwheel Galaxy, Carina Nebula and the first compact galaxy group discovered. Infrared images and the value of color astrophotography.

Trace Signals From an Alien Civilization: Not So FAST?

Image
(From STR/AFP/Getty Images, via NPR, used w/o permission.) (China's FAST radio telescope, another eye on the universe since 2016.) Scientists in China's Guizhou province have been receiving radio signals from interstellar space since 2016. Three of these signals may have been from folks who aren't human, but use radio waves the way we do. Then again, maybe they weren't.... More at A Catholic Citizen in America . Narrow-band signals from interstellar space. Tesla, pulsars, the Wow! signal and Tabby’s Star. Still looking for alien civilizations.

TAE and ITER: A Few Steps Closer to Fusion Power

Image
One way or another, energy is in the headlines nearly every day. But I won't be talking about the latest energy crisis, shortage or agreement. Instead, I'll be looking at developments in fusion power from a few months — and a few days — ago. More at A Catholic Citizen in America .

Supernova Requiem: Reruns From a Gravity Lens

Image
Nothing in this universe lasts forever, including stars. Massive stars live fast and die young: exploding as supernovae. One of these, AT2016jka, nicknamed "Requiem," was first spotted in 2016. It showed up again in 2019. Scientists figure they'll get another look in 2037, give or take a few years But the supernova only exploded once. We're getting reruns of the event, thanks to gravitational lensing. I'll be taking about stars, including supernovae, gravitational lensing, and whatever else comes to mind. More at A Catholic Citizen in America .

Spirit Photographs

LIGO/Virgo: Another First

Image
Another gravitational wave observation gave scientists the best evidence yet about one aspect of merging stars. On August 17, 2017, folks with the LIGO/Virgo collaboration observed three clusters of gravitational waves. This time astronomers found an infrared, visible, and X-ray event near where the gravitational wave source. The August gravitational wave observation, GW170817, is the first one where astronomers found electromagnetic waves coming from the same spot. It's a very big deal. More at A Catholic Citizen in America .

Einstein's Waves: New Views

Image
Einstein's theories gave scientists good reasons for thinking gravitational waves exist. A century later, instruments detected the elusive radiation. Three American scientists won this year's Nobel Prize in Physics for work that led to the discovery. Observatories in America and Italy have detected three more gravitational wave signals. What they learned wasn't quite what they expected.... More at A Catholic Citizen in America .

Great American Eclipse 2017

Image
A Solar eclipse sweeping from coast to coast dominated Monday's news in America. I saw headlines describing the event, weather in different states, how folks had prepared and how they reacted, and some of the science involved. It was nice while it lasted.... More at A Catholic Citizen in America .

Baryons, Gravity Waves

Image
These are exciting, or disquieting, times. Which it is depends partly on how much a person likes living in a world where scientific knowledge is rapidly changing. I like it, a lot.... ...Since this is a "religious" blog, I'll be discussing — briefly, for me — how my faith relates to experiments using CERN's Large Hadron Collider and science in general.... More at A Catholic Citizen in America .

Pollution: Still Learning

Image
Scientists found PCBs and PBDEs in deep-sea critters, armyworms are on the march in Africa, and Mexico City's air isn't as clean as we'd hoped. Rational concern seems reasonable.... ...Last week I talked about blaming our tools for our mistakes. ( February 10, 2017 ) This week I'll revisit Lovecraft's "placid island of ignorance,"sort of.... More at A Catholic Citizen in America .

Starshot, SETI, and the Universe

Image
We may be within a generation of sending probes on flyby missions to other stars, high-energy jets from several distant galaxies all point in the same direction, and we're learning more about hot super-earths. That sort of thing fascinates me, your experience may vary. Meanwhile, SETI researchers will be checking out red dwarfs: which may be more promising places to look for neighbors than we thought. More at A Catholic Citizen in America .

Reaching for the Stars

Image
Scientists and engineers in BAE Systems' Project Greenglow are trying to control, or sidestep, gravity. Back on my side of the Atlantic, scientists at NASA's Eagleworks say they've successfully tested prototype RF resonant cavity thrusters and a warp field generator. Other scientists are skeptical. Very skeptical.... More at A Catholic Citizen in America .

Neutrinos and a Fading Universe

Image
We knew this universe was fading, but now scientists have a much clearer picture of how fast the lights are going out.... ...Other scientists are pretty sure they're detecting neutrinos generated inside Earth. "Pretty sure" isn't "really sure," though, so they're still working on that research.... ...Right after a very quick glance at natural philosophy becoming science, I'm going to say why I do not believe that thinking is a sin — again. You've probably read that sort of thing on this blog before, so skip ahead to Portrait of a Fading Universe , teach yourself origami, read a good book, whatever.... More at A Catholic Citizen in America .

Large Hadron Collider: There’s More to Learn

Image
The world's largest and most powerful particle collider , CERN's Large Hadron Collider (LHC), is back in operation. Scientists will be studying conditions like those just after this universe began: at about twice the energies they used back in 2013. I'm excited at the prospect of learning more about the workings of matter and energy: and news about the LHC is already starting to get goofy. More at A Catholic Citizen in America .

Alien Worlds, Martian Methane, Looking for Life

Image
Someone's made a 'top 10' list of "top exoplanet discoveries of 2014," including the first potentially habitable Earth-size world. Mars had an ocean: billions of years ago. Scientists are piecing together the story of how Mars became the world it is now: and trying to figure out where Martian methane comes from. Other scientists have discovered another reason to look for life on planets orbiting red dwarf stars: and there's the ongoing discussion of how to define "life." We're learning more about this universe, and discovering that there's much more to learn. More at A Catholic Citizen in America .

Schrodinger's Cat(s); and Gravitational Waves, Revisited

Image
Quantum mechanics makes more sense if the Many-worlds interpretation of quantum mechanics is right, and we're still not sure whether BICEP 2 detected gravitational waves: or polarized dust. If you've been here before, and know why I don't see a conflict between science and faith, feel free to skip straight to "Who Killed Schrodinger's Cat?" (No animals were harmed in the writing of this post) ... ...Since I'm a Catholic, I believe that God created, and is creating everything. Since I also believe that God isn't a liar, and that truth cannot contradict truth: honest research cannot hurt faith. (Catechism of the Catholic Church, 144 , 159 )... More at A Catholic Citizen in America .