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cphlo.bsky.social
Drop the mass, drop the past cphlo.net
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Guidance to NASA employees is trickling in on how to respond to the recent DOGE-driven email asking for what people accomplished last week. The general theme: wait to respond, with further agency-wide guidance expected Monday www.bloomberg.com/news/article...

NASA leadership is assessing how to respond to Elon Musk's email ultimatum. One email to SMD employees sent Saturday afternoon says it could be an “opportunity to showcase the great work we do in SMD.” This morning, the guidance was updated: wait to reply. Read more: www.cnn.com/politics/liv...

New post: Let's look at the Wide Field Survey Telescope. Look *at* it, not through it- how do we spot the asteroids? cphlo.net/abc/index.ph...

Via the House Science Committee (Democrats) - Committee Leaders Unsatisfied with NASA Response Regarding DOGE Access, Demand More Information democrats-science.house.gov/news/press-r...

How do you say "slam dunk" in Mayan?

"...in the only language they understand"

The AMS is temporarily opening its career services to all who need them, regardless of membership status, and offering dues waivers and meeting registration fee reductions for those impacted by job loss due to changes in the government. Read more: bit.ly/4gRiHAk

Le solicito al Servicio de Evaluación Ambiental que rechace de manera temprana el proyecto INNA de AES Andes para que la empresa reubique el proyecto 🚫 Abro hilo (y segunda parte en los comentarios)

A big power company wants to build a huge industrial complex near Paranal, the top astronomical site in the world (VLT, ELT etc.). Here is a petition for physics/astro professionals 🧪🔭, please consider signing. Even if you're not, pls help raise awareness by sharing the links in the petition. Thx! 🙏

Have you checked our Graduate Trainee opportunities? 👉 jobs.esa.int/ If you’re in the final year of a Master’s degree (or recently graduated) in engineering, science, IT or business, don't miss this out 👉 www.esa.int/About_Us/Car... 🧪🔭

"Much-hyped"? I think folks generally did a good job of putting this object in context and focusing on the dominant probability that it wouldn't hit. The most irresponsible thing I saw posted about 2024 YR4 is this headline.

Centaurs: kinda not asteroids, but kinda so. And a title in the Space Science book series is a pretty safe bet

The first "plot all the asteroids" app was World Wide Telescope (WWT) several years ago, which needed a GPU. NASA has a particularly nice variation these days that can run on off-the-shelf hardware. Tilt & zoom and run time forward & backward for Apophis and other comets and asteroids. #PlanetSci

#NASA lowers #impact risk of 55 meter 'city-killer' #asteroid 2024 YR4 from a high of 1 in 32 to 1 in 360. This is a downgrade from 3 to 1 on the #Torino danger scale. It will likely be downgraded to 0 when more orbital data points are collected.🧪🔭 www.space.com/asteroid-202...

...and with side plans: serendipitously take spectra from small bodies

IRTF: like a thousand tiny space probes. Also uselful for context data during a space probe mission. Cutting it would truly be pennywise, pound foolish.

Use this form to tell us how the new US administration is affecting your research, or suggest future coverage https://go.nature.com/3EYNA8C

The likely path of the asteroid 2024 YR4 has drifted away from Earth and toward the Moon. Here is what the view from the small Asteroid could be at closest approach to the Moon, extrapolated from the most recent visualization on NASA's Eyes On Asteroids. Sunlight and Earthlight shine on both.

I am disappointed to discover that the new NASA Solar System Exploration Research Virtual Institute webpage has removed or just not uploaded the old NASA Exploration Science Forum (NESF) meetings, abstracts, and posters. #planetsci 1/4

NEW! Juan Luis Rizos (Instituto de Astrofísica de Andalucía, University of Maryland) chats about his article on Ceres: youtu.be/TWYGpjlYRnc The AAS Journal Author Series connects authors with their article, their human story, and the larger #astronomy community. #ExploreAstronomy 🔭

These rectangular pads are the permanent magnets of the linear motor drives of the Vera C. Rubin Observatory Telescope Mount which is able to point toward any celestial position with a very high speed (up to 10.5 deg/s in azimuth). @vrubinobs.bsky.social @lsst-france.bsky.social 🔭

Had an interesting talk about Arrokoth in a recent #CometInterceptor meeting. Will be fascinating to compare the appearance of this Kuiper belt object in situ with an incoming comet from there or the Oort cloud #PlanetSci

☄️ 🔭 The impact probability of asteroid 2024 YR4 has dropped from 2.8% to 0.16%. Thanks to new observations, Earth is now at the edge of our shrinking ‘uncertainty window.’ If this trend continues, the risk may soon reach 0%.

Operative words: "has declined". This is normal behavior, for impact odds to peak, then ramp down slowly

Best estimate for 2024 YR4 is 55 meters. But academic anyway, as impact probabilities are now falling again

The National Association of Science Writers is strongly committed to the free exchange of scientific information, diversity in science and science communication, and combating propaganda. Here are encouragement & resources & a call for ideas from @sciencewriters.org: 🧪 www.nasw.org/article/our-...

As 2024 YR4 Earth impact chances for 2032 plumet, the Lunar possibility is still very much on the table. Current Sentry chances for Earth are 0.28%. Per JPL, the Lunar impact has increased to 1%. While still a very unlikely scenario, it's interesting to consider. JPL blog link in comments. 🔭🧪

Reduced probability. REDUCED.

Our LSST Camera team has been busy! Last week, after weeks of prep, the team moved Rubin's car-sized camera and installed on in the "camera rotator" that will connect it to the telescope. This is the first time the camera has been physically connected to part of the telescope! 🔭🧪

Regarding how we might move such an object - the NASA DART mission did exactly this in 2022 by slamming into #Dimorphos, a rather larger asteroid than #2024YR4. Here's a (truncated) clip of me talking to #BBCbreakfast about it, hours before the impact. 🔭🧪

The few percent chance of asteroid 2024 YR4 colliding with the Earth offers an extra literal interpretation of the movie "Don't Look Up" that frankly nobody needed 🔭 But JAXA Planetary Defense did weigh in with comments on twitter! 🛰️ First, we're hunting these asteroids down & we'll likely see more:

2 new JWebbinars coming up, hosted by our @spacetelescope.bsky.social #JWST teams! Details and sign up info below. 🔭

FEBRUARY 27: "Exploring the Solar System with the James Webb Space Telescope" with Dr. Heidi Hammel. 🔭 🧪

A sample from asteroid Bennu reveals the building blocks of life were present in the early solar system. What this tells us about how life might have started on Earth and how it might have begun elsewhere in the Solar System. 🧪 🔭 Listen to @bipisci.bsky.social: https://buff.ly/3QizS2N

Eagerly anticipating JWST observations in Spring 2025, then recovery during the 2028 apparition.

Note: Betteridge's Law applies

La Sagra, now Pujalt observatories. Bienvenidos!