https://padlet.com/lisle202/6nryzt40urxe en-us 2018-09-24 15:00:04 UTC 2025-10-29 01:47:11 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Planets.png bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067621 The brilliant point of light is the explosion of a star that has reached the end of its life, otherwise known as a supernova. Supernovae can briefly outshine entire galaxies and radiate more energy than our sun will in its entire lifetime. They're also the primary source of heavy elements in the universe.]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067621 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067623 continuous and distinctive band of stars that appear on plots of stellar color versus brightness.]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067623 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067624 a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter.]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067624 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067625 the collapsed core of a large star which before collapse had a total of between 10 and 29 solar masses]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067625 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067627 the luminous envelope of a star from which its light and heat radiate.]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067627 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067628 a ring-shaped nebula formed by an expanding shell of gas around an aging star.]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067628 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067629 a contracting mass of gas that represents an early stage in the formation of a star, before nucleolus thesis has begun]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067629 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067631 a very large star of high luminosity and low surface temperature. Red giants are thought to be in a late stage of evolution when no hydrogen remains in the core to fuel nuclear fusion.]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067631 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067632 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067632 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067633 a spot or patch appearing from time to time on the sun's surface, appearing dark by contrast with its surroundings.]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067633 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067634 A sudden flash of increased brightness on the Sun, usually observed near its surface and in close proximity to a sunspot group. Powerful flares are often, but not always, accompanied by a coronal mass ejection. Even the most powerful flares are barely detectable in the total solar irradiance.]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067634 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067636 a very large star that is even brighter than a giant, often despite being relatively cool.]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067636 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067637 a small very dense star that is typically the size of a planet. A white dwarf is formed when a low-mass star has exhausted all its central nuclear fuel and lost its outer layers as a planetary nebula.]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067637 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067639 A region of space-time exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light can escape from inside it. The theory of general relativity predicts that a sufficiently compact mass can deform space-time to form a black hole.]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067639 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067641 a reddish gaseous layer immediately above the photosphere of the sun or another star. Together with the corona, it constitutes the star's outer atmosphere]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067641 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067643 hot plasma rises, cools as it nears the surface, and falls to be heated and rise again.]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067643 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067645

the rarefied gaseous envelope of the sun and other stars. The sun's corona is normally visible only during a total solar eclipse when it is seen as an irregularly shaped pearly glow surrounding the darkened disk of the moon.

]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067645 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067647 release of plasma and accompanying magnetic field from the solar corona. ]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067647 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067649 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067649 bb19054 https://padlet.com/lisle202/6nryzt40urxe/wish/285067650 total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object]]> 2018-09-24 15:00:04 UTC https://padlet.com/lisle202/6nryzt40urxe/wish/285067650