Astronomical News

Joined
Aug 19, 2003
Messages
48,861
Likes
20,950
Points
284
Location
Eblana
This one has to be a starship.

Up until now, the worlds we've visited with robotic spacecraft have been composed largely of rock, ice and gas.

But a Nasa mission due to launch in 2022 will visit an object thought to be made largely of metal. 16 Psyche is part of the asteroid belt - the sprawling mass of planetary leftovers that orbits the Sun between Mars and Jupiter. About the size of the US state of Massachusetts, Psyche is the largest metallic asteroid known to science. But how did this 200 km-wide metal world come to be?

https://www.bbc.co.uk/news/science-environment-47559416
 

Comfortably Numb

Justified & Ancient
Joined
Aug 7, 2018
Messages
3,856
Likes
5,019
Points
204
Location
Phone
4 things we’ll learn from the first closeup image of a black hole

We’re about to see the first close-up of a black hole.

The Event Horizon Telescope, a network of eight radio observatories spanning the globe, has set its sights on a pair of behemoths: Sagittarius A*, the supermassive black hole at the Milky Way’s center, and an even more massive black hole 53.5 million light-years away in galaxy M87 (SN Online: 4/5/17).

https://www.sciencenews.org/article/event-horizon-telescope-first-image-black-hole-questions
 

Comfortably Numb

Justified & Ancient
Joined
Aug 7, 2018
Messages
3,856
Likes
5,019
Points
204
Location
Phone
A fascinating breakthrough at my old university.

Taking the temperature of black holes

Researchers at Heriot-Watt University in Edinburgh have developed a new formula to quickly calculate the temperature of a black hole.

They say it is simple and powerful, and offers fundamental insights into space and time.

https://www.bbc.co.uk/news/uk-scotland-47773553
 
Last edited:

Comfortably Numb

Justified & Ancient
Joined
Aug 7, 2018
Messages
3,856
Likes
5,019
Points
204
Location
Phone
Triple checked to make sure this wasn't an April Fool...

SCIENTISTS CALL MYSTERIOUS MEETING AS RUMOURS OF FIRST EVER BLACK HOLE PHOTO HEAT UP

Scientists are to hold mysterious meetings across the world to announce a "groundbreaking" new black hole discovery.

Press conferences around the globe are being organised, seemingly to announce a photograph that could break new ground in our understanding in space. Humanity might be about to see a black hole for the first ever time.

https://www.independent.co.uk/life-...t-meeting-event-horizon-eso-a8850486.html?amp
 
Joined
Aug 19, 2003
Messages
48,861
Likes
20,950
Points
284
Location
Eblana
Hopefully the asteroid isn't a concealed Alien Starship/Base. They might regard it as a Pearl Harbour style incident.

The Japanese Hayabusa-2 spacecraft is thought to have detonated an explosive charge on the asteroid it is exploring.

Its mission is to create an artificial crater on the asteroid Ryugu. If this is successful, it will later return to gather samples of the asteroid, which could help scientists understand how Earth was formed in the early Solar System.

According to Kyodo News, the experiment's success will only be confirmed in late April.

The explosive device, called the Small Carry-on Impactor (SCI), was deployed by the Hayabusa-2 on Friday. The SCI is a 14kg conical container attached to the Hayabusa-2 and packed with plastic explosive. It was intended to punch a 10m-wide hole in the asteroid upon impact.

The SCI on Friday successfully separated from the Hayabusa-2 at an altitude of 500m above the surface of Ryugu.

https://www.bbc.com/news/science-environment-47818460
 
Last edited:

Comfortably Numb

Justified & Ancient
Joined
Aug 7, 2018
Messages
3,856
Likes
5,019
Points
204
Location
Phone

Comfortably Numb

Justified & Ancient
Joined
Aug 7, 2018
Messages
3,856
Likes
5,019
Points
204
Location
Phone
Whilst still perplexed how this possible, looks like the real deal...

We're About to See The First-Ever Photo of a Black Hole. Here's What It Might Be Like

BY MICHELLE STARR
APRIL 04, 2019

The year 2019 is here. With it, we've been promised a splendid moment in astronomy. For years, the Event Horizon Telescope has been working to bring us the first ever telescopic photograph of the event horizon of a black hole.

https://www.sciencealert.com/we-re-...a-black-hole-here-s-what-it-might-be-like/amp
 

OneWingedBird

Beloved of Ra
Joined
Aug 3, 2003
Messages
15,646
Likes
6,749
Points
284
And here is the first image of a black hole, and I’ll start the ball rolling, it’s the Eye of Sauron!
https://www.bbc.co.uk/news/science-environment-47873592
View attachment 16190
It'll be interesting to see what detail we get if there are higher res pictures still to come, if I understand this correctly, the light isn't coming from the black hole, rather it's all lensed from the background.

The black centre is where the size of the black hole exceeds the angle that light is being bent around it ie actual event horizon seen face on.
 

Bad Bungle

Dingo took my tray bake.
Joined
Oct 13, 2018
Messages
1,179
Likes
2,937
Points
154
Location
The Chilterns
It does look a lot like it was imagined to look - excellent.
Can some-one explain what I'm looking at please ? I presume it's not a photograph, so maybe a composite signal from an array of radio telecopes ? That would require software to interpret the data and build an image - maybe that's why a black hole looks like a torus (as anticipated), why atoms under an electron microscope look like the ball and stick models and why the Martian sky in the Viking photos was originally green (actually red but the software was calibrated to show all sky as blue).
 

hunck

Justified & Ancient
Joined
Jul 13, 2011
Messages
4,342
Likes
5,171
Points
209
Location
Hobbs End
Can some-one explain what I'm looking at please ? I presume it's not a photograph, so maybe a composite signal from an array of radio telecopes ? That would require software to interpret the data and build an image - maybe that's why a black hole looks like a torus (as anticipated), why atoms under an electron microscope look like the ball and stick models and why the Martian sky in the Viking photos was originally green (actually red but the software was calibrated to show all sky as blue).
Yes it's a composite image formed from I think 8 radio telescopes around the world. There was a BBC prog about it last night, probably now on iplayer.

The photo image may not look that impressive but it is 55m light years away & not that large. They had to go to some lengths to get it, combining teams worldwide.

Weather conditions had to be clear at all locations at the same time. In addition, relative positions had to be calculated exactly. The telescope on Antarctica is on a moving ice sheet, & all of them moved several meters in altitude depending on the position of the moon & it's gravitational pull. All of this had to be accounted for. Hard drives had to be kept at optimum temperature - overheating would be disastrous. In short, everything had to work perfectly at the same time. The technical feat was quite exceptional.

I think they got far more data than just the image. Drives & drives of it. The programme is well worth a watch.
 
Last edited:
Joined
Aug 19, 2003
Messages
48,861
Likes
20,950
Points
284
Location
Eblana
Israel's first Lunar lander suffers a glitch, which has greatly extended its orbit. Hopefully will not prevent the lander from errm ... landing:

https://www.google.co.uk/amp/s/www.theregister.co.uk/AMP/2019/03/06/space_roundup/
Sadly it has crash landed. Or was it shot down by missiles from a nazi Moonbase?

The first privately funded mission to the Moon has crashed on the lunar surface, in a blow to what had been hoped would have been a landmark moment for space exploration.

The Israeli spacecraft Beresheet, named after the Hebrew for “in the beginning”, was a joint project between SpaceIL, a privately funded Israeli non-profit organisation, and Israel Aerospace Industries. It set off for the moon in late February but crashed on the lunar surface after the apparent failure of its main engine.

https://www.theweek.co.uk/100729/fi...letter&utm_medium=email&utm_source=newsletter
 
Top