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Jason Nishiyama @evilscientistca@octodon.social

White dwarf stars can range in temperature from well over 100000K to about 4000K.

Student plates growing (hopefully) genetically modified E. coli bacteria.
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Stefan's Quintet is a group of 5 galaxies in the constellation Pegasus. Four of the 5 galaxies are an actual compact galaxy group. The fifth is a foreground galaxy in the line of sight. octodon.social/media/KO9BAJ__N

Faraday John Cage: a mesh container that's perfectly soundproof in both directions, but only for four minutes and thirty-three seconds at a time.

White dwarfs stars don’t undergo fusion, they are inert balls of electron degenerate gas that are slowly cooling. How slow? Takes about 10 billion years.

Stars smaller than the Sun don’t form planetary nebulae. As their cores turn into white dwarfs they don’t get hot enough to cause the ejected gas to glow.

Net neutrality as a phone analogy: Net neutrality, you pick up your Telus phone and call your Bell customer friend and the call goes through, no extra charges or slowdowns. No net neutrality: You pick up your Telus phone and you're told you can call your friend for an extra fee.

Achy and coughing... I've got a bad feeling about this...

The galaxy M51 as seen by the 0.5m Baker-Nunn telescope of the Rothney Astrophysical Observatory. This interacting galaxy is about 24 million light years distant. octodon.social/media/FwsRa4JJD

After all it's fuel is expended. All it's outer layers ejected. Our Sun will end its days as a white dwarf star. A remnant of our Sun's core slowly cooling as it drifts through space.

In general terms, more low to intermediate mass stars are formed in a galaxy over time than larger mass stars.

If you want to make your own Hubble images, all publicly available Hubble data is available at the Mikulski Archive for Space Telescopes: archive.stsci.edu

Proto-planetary nebulae are a stage of stellar evolution between asymptotic giant branch stars and planetary nebulae. PPNe have characteristics of both AGB stars and PNe. PPN IRAS17106-3046 shown, image from Hubble Space Telescope data. octodon.social/media/EFskOOaoy

Since most imagers for astronomy don't have eyepieces, a focusing mask is often used to help bring objects into sharp focus. octodon.social/media/1WlWCfPrw octodon.social/media/ia15pKPsG

Looking at astronomy as a hobby? Before sinking money into a telescope why not try a pair of binoculars? Way cheaper, easier to use, and a great way to learn the night sky.

M103 is an open cluster about 7000 ly away in the constellation Cassiopeia. Open clusters like this one help us understand how stars evolve. octodon.social/media/cH4dTbefU

Stars that are 8 times the mass of the Sun or larger end their lives spectacularly in a supernova explosion. The explosion is so great it outshines the galaxy the star resides in. Supernova remnant (SNR) M1 shown. octodon.social/media/69cb4Ns_d

Asymptotic Giant Branch (AGB) stars undergo massive mass loss. So much so they basically eject the non-core layers of the stars into space by the end of this phase of stellar evolution.

The moving dot is the asteroid Pallus' motion over the period of an hour. This is how we look for asteroids. Take a picture, wait a bit, then take another picture and see what moves. octodon.social/media/cVZQ9yo9e