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APOD: 2025 February 19 – HH 30: A Star System with Planets Now Forming
How do stars and planets form?
New clues have been found in the protoplanetary system
Herbig-Haro 30
by the
James Webb Space Telescope in concert with
Hubble and the Earth-bound
ALMA.
The
observations show, among other things, that large
dust grains are more
concentrated into a central disk where they can form planets.
The featured image from Webb shows many attributes of the active HH-30 system.
Jets of particles are being expelled vertically,
shown in red, while a dark
dust-rich disk is seen across the center,
blocking the light from the star or stars still forming there.
Blue-reflecting dust is seen in a
parabolic arc
above and below the central disk,
although why a tail appears on the lower left is currently unknown.
Studying how planets form in
HH 30
can help astronomers better understand how planets in our own
Solar System once formed, including
our Earth.
APOD: 2025 February 19 – HH 30: A Star System with Planets Now Forming
How do stars and planets form?
New clues have been found in the protoplanetary system
Herbig-Haro 30
by the
James Webb Space Telescope in concert with
Hubble and the Earth-bound
ALMA.
The
observations show, among other things, that large
dust grains are more
concentrated into a central disk where they can form planets.
The featured image from Webb shows many attributes of the active HH-30 system.
Jets of particles are being expelled vertically,
shown in red, while a dark
dust-rich disk is seen across the center,
blocking the light from the star or stars still forming there.
Blue-reflecting dust is seen in a
parabolic arc
above and below the central disk,
although why a tail appears on the lower left is currently unknown.
Studying how planets form in
HH 30
can help astronomers better understand how planets in our own
Solar System once formed, including
our Earth.
hot protoplanets in your neighborhood
Earth, Sol system, Western spiral arm
Zuzebox’s Blog takes a look at the Motorola 6809 microprocessor from the early 1980s.
Motorola’s 6809 is often said to be the best of the 8-bit microprocessors that came out of the 1970’s.
But it came a little too late for the first personal revolution and home computer scene that followed. As almost all computers from this time used either the 6502 or the Z80. Which is a shame because it was a really good microprocessor and many including myself consider it the best 8-bit microprocessor ever made.
Tandy Color Computer and Color Computer II, the Dragon 32 and 64 and the awesome Vectrex video console. As well as numerous video arcade machines. And finally it was also considered for the Apple Macintosh and was used in a very early proof of concept design.
Read more including lots of source links in the post here.
Ed. note: I selected the 6809 microcontroller for a speech synthesis project I built in 1985 in my senior year at Caltech and a project for interfacing to a synthetic aperture radar for JPL. A very nice chip.
if I bought a modern 8-bit SBC I might pick 6809 just because it is so relatively un-loved. There are a couple different boards on tindie, and I assume you can get the chips for a reasonable price.
Earth, Sol system, Western spiral arm
Google will soon use machine learning to estimate the age of its users. From a report: In an update on Wednesday, Google said it's testing a machine learning model in the US to help determine whether someone is under 18, allowing it to "provide more age-appropriate experiences" across its platforms. The age estimation model will use existing data about users, including the sites they visit, what kinds of videos they watch on YouTube, and how long they've had an account to determine their age.
crud I think my google account's old enough to vote.
Earth, Sol system, Western spiral arm
dental drills are 300krpm? I had no idea. wow.
Earth, Sol system, Western spiral arm
1 public comment
It was great until my thumb slipped and I accidentally launched my telescope into the air at Mach 8.
Microsoft has intensified efforts to block unsupported Windows 11 installations, removing documentation about bypassing system requirements and flagging third-party workaround tools as potential malware. The move comes as Windows 10 approaches end of support in October 2025, when users must either continue without updates, upgrade to Windows 11, or purchase new hardware compatible with Windows 11's TPM 2.0 requirement.
Microsoft Defender now identifies Flyby11, a popular tool for installing Windows 11 on incompatible devices, as "PUA:Win32/Patcher." Users are also reporting that unsupported Windows 11 installations are already facing restrictions, with some machines unable to receive major updates. Microsoft has also removed text from its "Ways to install Windows 11" page that had provided instructions for bypassing TPM 2.0 requirements through registry key modifications. The removed section included technical details for users who acknowledged and accepted the risks of installing Windows 11 on unsupported hardware.
Microsoft Defender now identifies Flyby11, a popular tool for installing Windows 11 on incompatible devices, as "PUA:Win32/Patcher." Users are also reporting that unsupported Windows 11 installations are already facing restrictions, with some machines unable to receive major updates. Microsoft has also removed text from its "Ways to install Windows 11" page that had provided instructions for bypassing TPM 2.0 requirements through registry key modifications. The removed section included technical details for users who acknowledged and accepted the risks of installing Windows 11 on unsupported hardware.
Windows 10 is the last version of Windows, and Microsoft will never again increase hardware requirements. hahaha.
Earth, Sol system, Western spiral arm
Microsoft will stop supporting its Microsoft 365 (formerly known as Office 365) desktop applications on Windows 10 after October 14, the day the company is retiring the old operating system, it said.
harsh.
Earth, Sol system, Western spiral arm
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