One speech is an anecdote, but it does represent a typical rambling one hour ad hoc talk from anyone. There is nothing here to suggest drug use [!] or non-use, competence or non-competence. The important thing for Musk in his position is that he is clearly leading a supportive company structure, and for the companies…

The interesting thing is that the new find seems to indicate several sources for the organics. So if impactors is a source, there is now hope for other ways.

Typo: now identify.

This is interesting for Moon formation models, an orbit sharing protoplanet is a candidate for the Theia impactor that matured Earth and spawned the Moon.

That is the point of that definition, the protoplanetary disk have not yet stabilized so it is a transitional state towards a mature system. But in immature systems we can no identify growing planets, so the task is both simpler (can identify planets) and harder (transitional states are harder to classify).

From Ars: “In this new report, based on a large survey of 10,329 US adults, the highest support came for “monitor asteroids, other objects that could hit the Earth” (60 percent) and “monitor key parts of the Earth’s climate system” (50 percent).”

JAXA says the new generation Epsilon rocket shares similar parts to Japan’s H3 rocket, both of which are supposed to usher in a new era for the Japanese space industry.

An easy way is to use a handy cosmological calculator such as Ned Wright’s web page scripts. (I assume there are phone apps too.) He also has links to context material explaining the many types of distances cosmologists have to keep track of. (As well as inflation theory and LCDM theory expansion phases - inflation…

Yes, some. Big pieces that were on the areas they were supposed to clear was cleared, the beach dust that spread further wasn’t a hazard.

Unfortunately the link to the shorebird claim isn’t working. Notably though, the Florida Space Coast activities has protected their wildlife habitats by keeping people away from the area.

Interesting. The new estimate use an improved (less sensitive) method of estimating SMBH number density from the star velocity dispersion which in turn is estimated by photometric methods. It correlates better with both pulsar timing array gravity wave amplitudes and distributions, AFAIU the paper.

The article makes the test flight out as “botched” which a launched test craft isn’t. The flight surpassed the company stated goals, while showing some problems with the craft being unintentionally sturdier than anticipated (hence the delayed destruction). It looks like a personal opinion instead of reporting got the…

“The Webb Space Telescope is carrying on Kepler’s mantle as it seeks out exoplanets near and far,”. Not according to the scientists involved:

The comment box editor refuses to put the text as quoted but jumbles up the first sentence. Oh, well.

The newest kid on the block is that Hawking radiation may be better described as a gravitational Schwinger effect of just tidal forces in curved spacetime which may decouple it from the event horizon and apply to all gravitational bodies. STARTS WITH A BANG — JUNE 1, 2023 “Hawking radiation isn’t just for black holes,…

No, these structures are just very narrow.

The horisontal filaments are thought to be caused by an outflow, and the model they describe in their paper is a jet. “In this picture, the blueshifted arm of the jet emerges to the west of Sgr A* making an angle ∼45° to the line of sight.”

That is presumably a good match with the EHT model of Sgr A*:

Possibly axions is a DM candidate, but first the LHC and then the electron charge sphericity observations exclude WIMPs at realistic (and “natural”, around Higgs mass) mass scales. And axions are not necessary if inflation produce random parameters.

Ars Technica has an interesting article by Eric Berger on how now the at one time forbidden “depot” concept has become integral to cheap, reusable spacecrafts used for the Artemis Moon lander missions. [Titled ”At long last, the glorious future we were promised in space is on the way - “It is gratifying to see folks…

I know SpaceX has made us used to launching to orbit on the first attempt, but another Falcon 9 is a rare process - they themselves didn’t make it to orbit with Falcon 1 until the fourth attempt. But for Artemis to go to lunar surface either they or Blue Origin (or ULA) need to succeed with their current launcher…