Star clusters Study guides, Class notes & Summaries

Astro 7N PSU Unit 4Open star clusters - correct answer •have hundreds to thousands of stars •stars formed at the same time from the same gas cloud •bound by gravity for a few million years •lots of blue stars visible because of relatively young ages •Pleiades is an example Globular star clusters - correct answer -hundreds of thousands to millions of stars -yellow in color with red giants -many have ages around 10 billion years, considered old Ages of star clusters - correct...

Astro 7N PSU Unit 4Open star clusters - correct answer •have hundreds to thousands of stars •stars formed at the same time from the same gas cloud •bound by gravity for a few million years •lots of blue stars visible because of relatively young ages •Pleiades is an example Globular star clusters - correct answer -hundreds of thousands to millions of stars -yellow in color with red giants -many have ages around 10 billion years, considered old Ages of star clusters - correct...

Astro 7N PSU Unit 4 Question and answers 2024 verified to passAstro 7N PSU Unit 4 Open star clusters - correct answer •have hundreds to thousands of stars •stars formed at the same time from the same gas cloud •bound by gravity for a few million years •lots of blue stars visible because of relatively young ages •Pleiades is an example Globular star clusters - correct answer -hundreds of thousands to millions of stars -yellow in color with red giants -many have ages around...

ASTRO 102 Midterm 1 (UMich) Exam Questions & Answers 2023/2024 Milkyway contains ___ stars - ANSWER-100 billion Local Group - ANSWER-about 40 galaxies in galaxy cluster Superclusters - ANSWER-clusters of galaxy clusters 1 AU - ANSWER-earth's average distance from sun Light Year - ANSWER-distance light can travel in one year (9.46 tril km) Observable Universe - ANSWER-14 billion light years Big Bang - ANSWER-happened 14 bill years ago, avg. distance between galaxies increa...

What were the early ideas of how the Sun shines? Why were these ideas incorrect? Why does the Sun shine? - Answer-Chemical burning was what humans thought made the sun shine. However, if this was true- the sun would be like a campfire that would need a fuel source and to be "fed" periodically. The Sun shines due to nuclear fusion Be able to name the Sun's layers from inside to outside and be able to know the importance of each layer (e.g. what type of light does the chromosphere emit?) -...

___________ forces caused the gas in the thin disk to fragment into clouds or clumps with masses like those of star clusters - ️️gravitational ____________ black hole: a black hole whose mass exceeds 1000 solar mass - ️️supermassive ___________________ is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other - ️️friction (In the absence of a strong magnetic field), what is the chief factor that determines what typ...

A few decades ago, there was great controversy among astronomers over the question of quasar distances, with some arguing that quasars are much nearer than application of Hubble's law would seem to imply. Why do nearly all astronomers now agree that quasars really are quite far away? - ️️We now have images and spectra that clearly show quasars to be embedded at the centers of distant galaxies and within distant galaxy clusters. A quasar's spectrum is hugely redshifted. What do most astron...

ASTR 102 Exam Questions With All Correct Answers Current Update We have learned that the centre of the milky way contains a very massive black hole. We developed this understanding by: - Answer -Monitoring the orbital motions of many individual stars in the very central parts of the Milky Way If the sun were to be squashed down small enough to become a black hole, then: - Answer -The planets in the solar system would orbit the Sun in unchanged fashion (but would receive no light from it) ...

Rank the following from earliest to latest: protostars, dark globule, star cluster, supernova - Dark globule, protostars, supernova, star cluster Which type of light will be most affected by interstellar extinction? - Ultraviolet Globular clusters formed _______________ the gas from which our galaxy formed had time to collapse into a disk. - before The first stage of stellar evolution is the ___________________ phase - protostellar Time moves slower the _____________ you're moving - faste...

Floral design review questions with complete solutions __________ is the storage or shipment of flowers out of water. Dry pack Floral Material that has an "airy" look to create the finishing touch. filler The supplies, materials, and methods that designers use to place and hold flowers and foliage in an arrangement are called _________. mechanics __________ is the act of cutting flower stems properly and providing them proper treatments are any stage in the distribution proces...