https://padlet.com/ploera01/vwz30zke2pwi0e5l Peter Loera en-us 2024-09-17 19:59:58 UTC 2024-09-17 20:44:17 UTC hello@padlet.com ploera01 https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124286863 Nebulae are often star-forming regions, such as in the Pillars of Creation in the Eagle Nebula.

]]> 2024-09-17 20:03:45 UTC https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124286863 ploera01 https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124289824 The term "planetary nebula" is a misnomer because they are unrelated to planets.

]]> 2024-09-17 20:06:18 UTC https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124289824 ploera01 https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124294965 The supernova remnant is bounded by an expanding shock wave and consists of ejected material expanding from the explosion.

]]> 2024-09-17 20:11:02 UTC https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124294965 ploera01 https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124296811 The birthplace of stars. Diffuse nebula is the clouds of material formed from the explosions of Population Three, Population Two stars, and the leftover hydrogen and helium from the Big Bang.

]]> 2024-09-17 20:12:51 UTC https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124296811 ploera01 https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124299861 Stars are ranked from bottom to top in order of decreasing magnitude (increasing brightness) and from right to left by increasing temperature (spectral class).

]]> 2024-09-17 20:15:25 UTC https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124299861 ploera01 https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124304916 Massive hydrogen-burning stars are blue-white, the Sun is yellow, and low-mass stars are orange and red.

]]> 2024-09-17 20:18:15 UTC https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124304916 ploera01 https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124306303 A white dwarf is very dense: its mass is comparable to the Sun's, while its volume is comparable to Earth's.

]]> 2024-09-17 20:19:41 UTC https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124306303 ploera01 https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124318599 May have a diameter several hundred times that of the Sun and a luminosity nearly 1,000,000 times as great.

]]> 2024-09-17 20:31:33 UTC https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124318599 ploera01 https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124322657 They lie above the main sequence on the Hertzsprung–Russell diagram and correspond to luminosity classes II and III.

]]> 2024-09-17 20:35:54 UTC https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124322657 ploera01 https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124325381 The word comes from the latin for "new star," because often a star previously too dim to be seen with the naked eye can become the brightest object in the sky (besides the sun and the moon) when it becomes a nova.

]]> 2024-09-17 20:38:18 UTC https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124325381 ploera01 https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124328937 A supernova occurs during the last evolutionary stages of a massive star, or when a white dwarf is triggered into runaway nuclear fusion.

]]> 2024-09-17 20:41:51 UTC https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124328937 ploera01 https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124331038 Black holes are made of matter packed so tightly that gravity overwhelms all other forces.

]]> 2024-09-17 20:43:24 UTC https://padlet.com/ploera01/vwz30zke2pwi0e5l/wish/3124331038