Comments on: Could Eta Carinae Destroy Earth?

By: Alex Grizzle

Alex Grizzle — Sun, 16 Aug 2009 20:01:12 +0000

Eta Carinae Can Go any Day, Tommarow, or in The Next Hundred thousand Years, And those Nebula Are Harmless, They formed Form Long ago Supernoava and are Expanding On momtum and The Crab Pulsar

By: Blog de Astronomia do astroPT » Eta Carinae

Blog de Astronomia do astroPT » Eta Carinae — Sat, 13 Sep 2008 21:17:10 +0000

[...] têm o “defeito” de acabar com a vida. E Eta Carinae pode acabar com a vida na Terra? Pode, mas, como podem ler aqui, por estar tão longe não afectará os humanos na Terra, apesar de [...]

By: Kodey Baker

Kodey Baker — Sun, 13 Jan 2008 18:54:30 +0000

the world will end in like 20 years

By: alvinwriter

alvinwriter — Sun, 24 Jun 2007 13:10:17 +0000

I think the documentation of changes in objects like nova remnants is something which astronomers should carefully do now that telescopes have improved so much that details not possible twenty years ago are now pretty much common fare. The pictures taken today will prove very valuable in the future.

By: Tony

Tony — Fri, 22 Jun 2007 19:30:53 +0000

Thanks Phil, yes I had forgotten about the Crab Nebula and 1987A expansion. I guess the last time I thought about this was before the Hubble caught 1987A.

I’ll also do some scrounging and see what I can find. I think it’s amazing that we can see these events ‘real-time’.

The last time I was at a AAS meeting, I remember being amazed at the fact that astronomers were trying to find ‘transient’ events. This kind of thing would have been unheard just 15 years or so ago.

Astronomers no longer think of the sky as an unchanging, constant sphere.

By: Phil Plait, aka The Bad Astronomer

Phil Plait, aka The Bad Astronomer — Fri, 22 Jun 2007 16:28:04 +0000

Thanks for the plug, and the followup!

One note, though: several nebulae have been seen to physically expand. The Crab, for example, has expanded significantly even over a few decades, enough to see it in images: http://antwrp.gsfc.nasa.gov/apod/ap011227.html

Supernova 1987A’s remnant’s expansion is caught by Hubble: http://antwrp.gsfc.nasa.gov/apod/ap970124.html

I know there’s one of the Veil or some other SN remnant, but I can’t seem to find it. :-)