1MaureenRoy
From the US newspaper The Christian Science Monitor, here is a composite photo of the black hole Sagittarius A* at the center of the Milky Way galaxy:
https://www.csmonitor.com/Science/2022/0513/Galactic-picture-day-See-first-photo...
The article explains how this composite photo was built. The asterisk mark following the name Sagittarius A indicates that this object is a star.
https://www.csmonitor.com/Science/2022/0513/Galactic-picture-day-See-first-photo...
The article explains how this composite photo was built. The asterisk mark following the name Sagittarius A indicates that this object is a star.
2MaureenRoy
The latest US reminder that the Hubble mission is not done yet:
https://www.jpl.nasa.gov/news/two-exoplanets-may-be-mostly-water-nasas-hubble-an...
https://www.jpl.nasa.gov/news/two-exoplanets-may-be-mostly-water-nasas-hubble-an...
3MaureenRoy
A green comet will pass Earth for the first time in 50,000 years:
https://www.msn.com/en-us/news/technology/watch-a-comet-make-its-closest-approac...
https://www.msn.com/en-us/news/technology/watch-a-comet-make-its-closest-approac...
4DugsBooks
>3 MaureenRoy: I read an article that I believe said the comet will come its closest to Earth maybe a month or so after it nearest point to the sun - maybe a second chance to view with naked eye.
5MaureenRoy
The James Webb telescope has been studying our solar system's asteroid belt ... they found a new asteroid, and there's more to come:
https://www.cnn.com/2023/02/06/world/webb-telescope-asteroid-discovery-scn/index...
https://www.cnn.com/2023/02/06/world/webb-telescope-asteroid-discovery-scn/index...
6stellarexplorer
>5 MaureenRoy: Fantastic!
7MaureenRoy
Thanks to the ESA, we have new info on black holes:
https://phys.org/news/2023-04-gaia-family-black-holes.html
https://phys.org/news/2023-04-gaia-family-black-holes.html
8MaureenRoy
The first NASA mission to investigate asteroid mining approaches:
https://www.jpl.nasa.gov/news/nasas-psyche-mission-enters-home-stretch-before-la...
https://www.jpl.nasa.gov/news/nasas-psyche-mission-enters-home-stretch-before-la...
9DugsBooks
>8 MaureenRoy: Pretty neat! After the Psyche probes results start coming in I wonder if Musk’s Mars mission might be postponed while he loads up a bunch of picks, people & baskets on a Starship and points them toward the platinum asteroid.
Link to Psyche events page:
https://www.nasa.gov/psyche
Artist's concept photo from nasa site
Link to Psyche events page:
https://www.nasa.gov/psyche
Artist's concept photo from nasa site
10DugsBooks
Voyager 2: Nasa loses contact with probe after sending wrong command
Looks like one of the two human devices to actually visit our galaxy is having some (hopefully temporary) problems.
Looks like one of the two human devices to actually visit our galaxy is having some (hopefully temporary) problems.
11DugsBooks
Voyager 2 is back in touch with earth, "thanks to an 'interstellar shout' - a powerful instruction - its antenna is now back facing Earth."
12DugsBooks
Scientists have questions about a new James Webb Space Telescope image. I think the answer is obvious - an intergalactic Douglas Adams fan. Link to article
13MaureenRoy
NASA begins a new type of space communication:
https://www.jpl.nasa.gov/news/nasas-deep-space-optical-comm-demo-sends-receives-...
https://www.jpl.nasa.gov/news/nasas-deep-space-optical-comm-demo-sends-receives-...
14pgmcc
>13 MaureenRoy:
Interesting. Thank you for sharing.
Interesting. Thank you for sharing.
15MaureenRoy
pgmcc, UR welcome. Today I find two recent books and one future book on lasers for communication or propulsion in Earth orbit, in its atmosphere, or in outer space:
("Balloons," did he say??) Laser communication with constellation satellites, UAVs, HAPs and balloons: fundamentals and systems analytics for global connectivity, by Arun K. Majumdar. $77.96, 1st ed., Springer; June 24, 2022; 479p., pb:
https://link.springer.com/book/10.1007/978-3-031-03972-0
Near-Earth laser communications, edited by Hamid Hemmati; 2nd. ed.; CRC Press; $59.95; pb; 466.p.
https://www.taylorfrancis.com/books/edit/10.1201/9780429186721/near-earth-laser-...
Forthcoming on June 15, 2024:
Laser propulsion in space: fundamentals, technology, and future missions, by Claude Phipps; $185.00
("Balloons," did he say??) Laser communication with constellation satellites, UAVs, HAPs and balloons: fundamentals and systems analytics for global connectivity, by Arun K. Majumdar. $77.96, 1st ed., Springer; June 24, 2022; 479p., pb:
https://link.springer.com/book/10.1007/978-3-031-03972-0
Near-Earth laser communications, edited by Hamid Hemmati; 2nd. ed.; CRC Press; $59.95; pb; 466.p.
https://www.taylorfrancis.com/books/edit/10.1201/9780429186721/near-earth-laser-...
Forthcoming on June 15, 2024:
Laser propulsion in space: fundamentals, technology, and future missions, by Claude Phipps; $185.00
16MaureenRoy
Happy Thanksgiving, all: Today's never-before-seen view of Sagittarius, which forms the center of the Milky Way galaxy, is from the one and only Webb camera:
https://www.cnn.com/2022/07/12/world/gallery/james-webb-telescope-first-images-s...
https://www.cnn.com/2022/07/12/world/gallery/james-webb-telescope-first-images-s...
18DugsBooks
>16 MaureenRoy: Great photos! Nice to have them in one place & not have to jump around.
19DugsBooks
Telescope Array detects second-highest-energy cosmic ray ever
Article at Phys.org describing another “Oh My God particle” packing a difficult to comprehend amount of energy. I first heard about this over public radio which said “less than an ounce of such particles could destroy earth” or some such - hopefully they only come in smaller amounts.
https://phys.org/news/2023-11-telescope-array-second-highest-energy-cosmic-ray.h...
Article at Phys.org describing another “Oh My God particle” packing a difficult to comprehend amount of energy. I first heard about this over public radio which said “less than an ounce of such particles could destroy earth” or some such - hopefully they only come in smaller amounts.
https://phys.org/news/2023-11-telescope-array-second-highest-energy-cosmic-ray.h...
20MaureenRoy
New finding reported on phys.org website, but this is actually external to our galaxy by a long ways:
https://phys.org/news/2024-02-team-astronomers-galaxy-shouldnt.html
https://phys.org/news/2024-02-team-astronomers-galaxy-shouldnt.html
21MaureenRoy
The website phys.org has a report on measuring the prevalence of metals within a galaxy:
https://phys.org/news/2024-02-predictor-galaxy-metallic-content.html
https://phys.org/news/2024-02-predictor-galaxy-metallic-content.html
22MaureenRoy
Zeroing in on the formation of neutron stars:
https://mashable.com/article/james-webb-space-telescope-neutron-star-discovery
https://mashable.com/article/james-webb-space-telescope-neutron-star-discovery
23MaureenRoy
Space telescope interferometer upgrade:
https://phys.org/news/2024-02-black-hole-discovery-rethink-galaxies.html
https://phys.org/news/2024-02-black-hole-discovery-rethink-galaxies.html
24MaureenRoy
The hard work of preparing for long space missions goes on:
https://phys.org/news/2024-03-tank-enable-duration-space-exploration.html
https://phys.org/news/2024-03-tank-enable-duration-space-exploration.html
25MaureenRoy
Hardest known substance is no longer diamond:
https://www.popularmechanics.com/science/environment/a60248031/diamond-bc8-harde...
https://www.popularmechanics.com/science/environment/a60248031/diamond-bc8-harde...
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