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Skywatchery

Posted: Wed Dec 13, 2023 8:03 am
by Irrev-Black
For Australia, what promises to be the best meteor show of the year.
The best time to see them on the 14th and 15th will depend upon where you live:

Adelaide – 3:13 am ACST
Brisbane – 2:13 am AEST
Canberra – 3:00 am AEDT
Darwin – 2:43 am ACST
Hobart – 2:38 am AEDT
Melbourne – 3:17 am AEDT
Perth – 2:13 am AWST
Sydney – 2:52 am AEDT

The meteor shower will start to ramp up an hour or so before these times, so the idea is to head out earlier and watch the whole show unfold.

"For Darwin, for example, you can start watching from midnight, and other sites you can start watching it from about 1 to 1.30 am," Dr Musgrave says.
Details, ABC:
https://www.abc.net.au/news/science/202 ... /103199230

Re: Skywatchery

Posted: Sat Jan 06, 2024 1:52 pm
by Irrev-Black
A handy guide to upcoming astronomical events for 2024:

https://lifehacker.com/science/astronomy-events-in-2024

Re: Skywatchery

Posted: Sat Jan 06, 2024 4:45 pm
by stylofone
In 2012 I went to Cairns for the total solar eclipse. In the lead-up to it I noted there was also a big one coming up in 2028, with Sydney right in the path of totality. It's amazing that it's only 4 years away now. Then in 2030 there'll be another one covering big population areas from SA to Qld. I plan to be alive for both of those.

https://www.timeanddate.com/eclipse/map/2028-july-22

Re: Skywatchery

Posted: Fri Jan 26, 2024 8:05 am
by Irrev-Black
Duck your head!
An asteroid discovered earlier this month will reach its closest point to Earth on Saturday (Jan. 27), when it will soar through the sky at a distance closer to us than the moon.

You can watch the airplane-size asteroid as it sails just 220,000 miles (354,000 kilometers) from Earth — more than nine tenths of the average distance between our planet and the moon — on a Virtual Telescope Project live feed from 12:15 p.m. EST. The flying space rock will reach its closest point to Earth at 12:30 p.m. EST, according to NASA.

Astronomers first detected the up to 121-foot-wide (37 meters) asteroid, dubbed 2024 BJ, on Jan. 17. They documented their discovery the following day, after calculating that the rock will safely soar past our planet without incident.
Not sure whose "EST" this is, so please check.
https://www.livescience.com/space/aster ... -it-happen

Re: Skywatchery

Posted: Fri Jan 26, 2024 8:13 am
by stylofone
Irrev-Black wrote: Fri Jan 26, 2024 8:05 am
Not sure whose "EST" this is, so please check.
Assuming it's US Eastern, by my calculations it would be 1615 AEDT on Sunday. But I'm not 100% sure.

Re: Skywatchery

Posted: Sat Mar 30, 2024 11:47 am
by Irrev-Black
I thought flares were out of fashion.
Satellites have detected a massive solar flare powerful enough to ionize part of Earth's atmosphere.

Scientists spotted the flare erupting from the bottom of the sun on Thursday (March 28), using satellites from the National Oceanic and Atmospheric Administration (NOAA), according to the organization's Space Weather Prediction Center.

The flare, which peaked at 4:56 p.m. ET, was categorized as an X1.1 flare. X-class flares are the most powerful type of explosion the sun can produce, according to NASA.

The explosion was so powerful that it ionized the top of Earth's atmosphere, resulting in a "deep shortwave radio blackout over the Pacific Ocean," SpaceWeather.com reported.

The solar outburst was also accompanied by an enormous belch of plasma known as a coronal mass ejection (CME). NOAA scientists were initially concerned that the CME would collide with Earth, potentially resulting in a geomagnetic storm that could impact satellites, radio communications and other infrastructure. However, on Friday (March 29) the agency announced that the outburst would likely miss Earth.

Solar flares are large explosions that occur at the sun's surface when twisted magnetic-field lines suddenly snap, emitting large bursts of electromagnetic radiation, according to Space.com, Live Science's sister site.
https://www.livescience.com/space/the-s ... ific-ocean

Re: Skywatchery

Posted: Thu Apr 04, 2024 11:00 pm
by Irrev-Black
Ouch.
Alejandro Otero returned to his Naples, Florida home on the evening of March 8, 2024, only to find a strange hole smashed through the entire structure. As Ars Technica reports:

Otero wasn't home at the time, but his son was there. A Nest home security camera captured the sound of the crash at 2:34 pm local time (19:34 UTC) on March 8. That's an important piece of information because it is a close match for the time—2:29 pm EST (19:29 UTC)—that US Space Command recorded the reentry of a piece of space debris from the space station. At that time, the object was on a path over the Gulf of Mexico, heading toward southwest Florida.

This space junk consisted of depleted batteries from the ISS, attached to a cargo pallet that was originally supposed to come back to Earth in a controlled manner. But a series of delays meant this cargo pallet missed its ride back to Earth, so NASA jettisoned the batteries from the space station in 2021 to head for an unguided reentry.
https://boingboing.net/2024/04/04/2-pou ... -home.html


Re: Skywatchery

Posted: Sat Apr 20, 2024 4:01 pm
by Irrev-Black
TAS and SA: lucky bastards!

https://www.abc.net.au/news/2024-04-20/ ... /103749206

Re: Skywatchery

Posted: Sat May 11, 2024 3:31 pm
by Irrev-Black

Re: Skywatchery

Posted: Sat May 11, 2024 8:48 pm
by Irrev-Black
https://ozforecast.com.au/cgi-bin/weath ... animate=40 got me a very brief red aurora right of screen. If you read this in an hour from now, it's probably too late, but try increasing the "40" till you get sundown.