Comments on: Spirals within spirals

By: Jeff Wright

Jeff Wright — Tue, 25 Jul 2023 21:00:01 +0000

The Rishi Maze!

By: Robert Zimmerman

Robert Zimmerman — Tue, 25 Jul 2023 07:34:35 +0000

In reply to DJ. DJ: Do some searches here at BtB for these objects. You might find some very nice cool images to review.

By: DJ

DJ — Tue, 25 Jul 2023 07:01:54 +0000

I appreciate the technology that allows us to “see” cosmic events and matter of all kinds 100’s to 1000’s of light years away. But I would be most interested in Proxima Centauri b exoplanet. It is 4 light years away. With the technology we have available, I would like more visual information about that system. By the way Enceladus, Titan, and Ganymede would be very nice to get up close and personal with. IMO.

By: GeorgeC

GeorgeC — Tue, 25 Jul 2023 00:35:55 +0000

Michael, a supernova can output sufficient hard radiation to kill off life such as on earth over thousand of light years away. So a real problem for fragile things.

By: Michael McNeil

Michael McNeil — Mon, 24 Jul 2023 19:46:58 +0000

Despite appearing as an island of tranquillity in this image, UGC 12295 played host to a catastrophically violent explosion — a supernova… Too funny. A supernova is of course “catastrophic” at the scale of and to the host star, together with its whole system. But the subject was the enclosing galaxy. A single supernova explosion doesn't even start being catastrophic to a whole galaxy. To speak of it that way is like discussing some macroscopic block of matter — a golf ball, say — while observing what a “catastrophe” it is when a single atom within it radioactively decays (producing a flash detectable from a distance). Not hardly.