Jonathan Williams
- UMD Astronomy
- https://www.astro.umd.edu/~jonvwill/
NSF Astronomical Sciences/Electromagnetic Spectrum Management · Astrophysicist · Engineer · Posts are my own.
Joined Dec 2017
Lockheed Martin to Develop Laser Weapons for U.S. Navy Destroyers
Sea Level Rise Continuing To Accelerate Every Year, Study Finds
https://cleantechnica.com/2018/03/01/sea-level-rise-continuing-accelerate-every-year-study-finds
Precise New Measurements From Hubble Confirm the Accelerating Expansion of the Universe. Still No Idea Why It’s Happening
Space Catapult Startup Spinlaunch Has Come Out of Stealth Mode. Space Catapults? Yes Please
Astronomers Believe Type Ia Supernovae Can Explain Why the Universe is Expanding Faster Than Predicted
Here's a great writeup on this week's big Astronomy news, and why it's important.
It also illustrates the challenges astronomers face with respect to ever-increasing demands for radio spectrum.
(Research was funded by the National Science Foundation).
Signal detected from the first stars in the universe, with a hint that dark matter was involved
Jonathan Williams
boosted
Mars Curiosity rover can now drill again, and more like a human! NASA's "McGyvering" is paying off. #CoSoScience http://cnet.co/2oD2HdS
These Researchers Used A Laser To Wirelessly Charge A Smartphone
Research funded by the National Science Foundation
Jonathan Williams
boosted
NASA releases time-lapse of the disappearing Arctic polar ice cap #cososcience https://www.youtube.com/watch?v=Vj1G9gqhkYA&feature=youtu.be
(Blog post by Sabine Hossenfelder)
Shut up and simulate. (In which I try to understand how dark matter forms galaxies, and end up very confused.)
http://backreaction.blogspot.com/2018/02/shut-up-and-simulate-in-which-i-try-to.html
Jonathan Williams
boosted
Our universe is expanding and our Hubble Space Telescope has just made the most precise measurements of the expansion rate since it was first calculated nearly a century ago. #CoSoScience http://go.nasa.gov/2CCv9AU
Two observers moving at different constant speeds won't necessarily agree that the same events happen in the same order.
The freaky thing is, they're both right.
Reality warps itself to keep the speed of light the same for all constantly-moving observers.
As an engineer, it sounds like a feedback system. But a closer bet is it's simply written into the contract for anything that exists in our universe.
Good to be back home, after making the world safe for Radio Astronony...
Amateur astronomer gets 1-in-10-million shot of supernova’s first light
"Genetics and epigenetics are two types of studies of genes. The main difference between genetics and epigenetics is that genetics is the study of genes that control the functions of the body whereas epigenetics is the study of inheritable changes of the organisms caused by the modification of gene expression."
Difference Between Genetics and Epigenetics
http://pediaa.com/difference-between-genetics-and-epigenetics/
"There are two important, longstanding, and related questions about the hot solar wind: how is it heated, and how does the corona produce the wind? Astronomers suspect that magnetic reconnection in the chromosphere plays a key role."
New Simulations of Magnetic Reconnection in the Sun
https://scitechdaily.com/new-simulations-of-magnetic-reconnection-in-the-sun/
U.S. CERT: Vulnerability Summary for the Week of February 12, 2018
Boston Dynamics robot has claw-arm to turn handle and hold door open
https://techxplore.com/news/2018-02-boston-dynamics-robot-claw-arm-door.html
Jonathan Williams
- UMD Astronomy
- https://www.astro.umd.edu/~jonvwill/
NSF Astronomical Sciences/Electromagnetic Spectrum Management · Astrophysicist · Engineer · Posts are my own.
Joined Dec 2017