Physics

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Most of the mass of the Galaxy lies in the ________. Fill in the blank(s) with correct ... Started by nramada	1 Replies 83 Views	Jul 27, 2018 by Jane
In stage 3 of star formation, the cloud has collapsed enough that its inner regions are opaque to ... Started by tiara099	3 Replies 92 Views	Jul 27, 2018 by Toya9913
Helium production ceased when the universe was about ________ minutes old, and did not resume until ... Started by maychende	1 Replies 56 Views	Jul 27, 2018 by popopong
At a temperature of ________, protons and neutrons combined to form deuterium and start cosmic ... Started by gonzo233	1 Replies 64 Views	Jul 27, 2018 by Sarahjh
Young open clusters contain a lot of hot, young blue-white stars. Indicate whether the statement ... Started by geoffrey	1 Replies 60 Views	Jul 27, 2018 by xoxo123
Globular clusters contain mostly blue stars. Indicate whether the statement is true or ... Started by haleyc112	3 Replies 98 Views	Jul 27, 2018 by SamMuagrove
The spacecraft Cassini went into orbit around A) Uranus. B) Saturn. C) Jupiter. D) Pluto. E) ... Started by EAugust	1 Replies 151 Views	Jul 27, 2018 by bimper21
What are the three main parts of our Galaxy? What will be an ideal ... Started by karlynnae	1 Replies 113 Views	Jul 27, 2018 by tandmlomax84
The Galileo mission put a spacecraft into orbit around Jupiter. Which statement is true? A) ... Started by scienceeasy	1 Replies 74 Views	Jul 27, 2018 by catron30
The ________ epoch happened when the superforce separated into the electromagnetic, strong, and weak ... Started by geoffrey	3 Replies 89 Views	Jul 27, 2018 by TINA
The COBE data, combined with computer simulations, strongly supported the ________ epoch, showing ... Started by mckennatimberlake	1 Replies 65 Views	Jul 27, 2018 by micaelaswann
Small deviations in a planet's orbital motion A) indicate the presence of an extensive ... Started by robinn137	1 Replies 61 Views	Jul 27, 2018 by Edwyer
Interstellar gas is composed mainly of A) some hydrogen, but mainly carbon dioxide. B) 10 ... Started by Jipu 123	1 Replies 85 Views	Jul 27, 2018 by blfontai
Adams and Leverrier both predicted the position of Neptune, based on its effects on A) the Sun. ... Started by aabwk4	3 Replies 255 Views	Jul 27, 2018 by vboyd24
Who discovered the period-luminosity relationship, and why was it so critical? What will be an ... Started by kwoodring	1 Replies 74 Views	Jul 27, 2018 by Heffejeff
Uranus was discovered A) after examining perturbations in Neptune's orbit. B) less than 250 ... Started by burchfield96	1 Replies 83 Views	Jul 27, 2018 by akudia
Due to absorption of shorter wavelengths by interstellar dust clouds, distant stars appear A) ... Started by swpotter12	1 Replies 202 Views	Jul 27, 2018 by wshriver
Relate the age of the universe to the Hubble constant. What will be an ideal ... Started by james9437	3 Replies 123 Views	Jul 27, 2018 by Bigfoot1984
Compare the orbital motion of stars in the Galactic disk with those in the halo. What will be an ... Started by savannahhooper	1 Replies 86 Views	Jul 27, 2018 by ladyjames123
Discuss the value of Ho if the universe were closed and starting to collapse. What will be an ... Started by sc00by25	1 Replies 36 Views	Jul 27, 2018 by mcarey591
What would the geometry of a universe at the critical density be? What will be an ideal ... Started by futuristic	1 Replies 57 Views	Jul 27, 2018 by momo1250
The spectra of interstellar gas clouds show that they have the same basic composition as A) ... Started by Hungry!	3 Replies 88 Views	Jul 27, 2018 by momtoalll
Is the Hubble constant really constant? What will be an ideal ... Started by Themember4	1 Replies 136 Views	Jul 27, 2018 by ky860224
If the Galactic Year is defined as the orbital period of the solar system, how long does it take us ... Started by Chloeellawright	1 Replies 68 Views	Jul 27, 2018 by frogdreck123456
Cometary impacts with Jupiter A) are impossible to observe from Earth. B) are spectacular but do ... Started by Sufayan.ah	1 Replies 90 Views	Jul 27, 2018 by vkodali