Astrophysics and Cosmology - Discuss the Universe here

[TigerLily]

Aha! There it is. Thank you GraciousSweetheart. mv's tight-assed rules be damned. I'm double posting

Are we alone? NASA to reveal tantalizing discoveries Thursday

NASA on Thursday will unveil its latest discoveries about ocean worlds in our solar system "and the broader search for life beyond Earth."

The briefing will provide information gleaned from the Cassini spacecraft and Hubble Telescope, NASA says. The agency says the new discoveries will help "inform future ocean world exploration" â€" including NASA’s upcoming Europa Clipper mission planned for launch in the 2020s.

[Ciardelo]

Ciardelo admires TigerLily's tight-ass edness.

[GravitySucks]

Seems like a big one just missed us

https://www.cnet.com/news/asteroid-2017-001-close-pass-space-earth-nasa-undetected/

[GravitySucks]

https://medium.com/@uncertainquark/weirdest-types-of-moons-in-the-solar-system-17d17335ac59

[Agent : Orange]

Fifty pages? Wow.

Hope you all are doing well and got to enjoy the eclipse! I had a terrible time here, completely cloudy and nothing at all to see.

Been busy as hell and since Art's last retirement, I've not really been back. But I miss this forum a lot.

Lately I've been getting interested in fast radio bursts (FRBs). These are ms to second scale bursts in the radio which show high dispersion measure, a sign they have passed through a lot of matter to get to us so must have travelled a great distance. The current thinking is that super magnetized neutron stars may produce them in some way, since the bursts from one object have been seen to repeat (https://www.scientificamerican.com/article/the-recurring-question-where-do-fast-radio-bursts-come-from/), and that possibly the great brightness and dispersion of these bursts may come about from lensing of magnetar flares. This recent paper is really interesting: https://arxiv.org/abs/1703.06580
And some general background about FRBs: https://www.theguardian.com/science/2017/may/28/fast-radio-bursts-galaxy-far-away

[Agent : Orange]

https://phys.org/news/2017-09-hubble-unique-solar.html

Neat! Reminds me of this object announced in 2013:

https://www.nasa.gov/press/2013/november/nasas-hubble-sees-asteroid-spouting-six-comet-like-tails/

[Agent : Orange]

Nice article on the Bullet Cluster, which was discussed early in this thread at length, from Ars Technica:
https://arstechnica.com/science/2017/09/science-in-progress-did-the-bullet-cluster-withstand-scrutiny/

[Dr. MD MD]

https://www.youtube.com/watch?v=LZCMwfR3P94