Weegy: The Hubble Law - refers primarily to the density and rate expansion of galaxy. User: Compared to a stationary galaxy, light from a galaxy that is moving away from Earth will appear _____. A. bluer B. redder C. the same Weegy: Compared to a stationary galaxy, light from a galaxy that is moving toward Earth will appear bluer. User: If an astronomer measured the temperature of space directly above Earth's north pole, and it was 3 K, what would be the most likely measurement of space's temperature directly above the south pole? A. 0 K B. 3 K C. 30 K D. There's not enough information given to answer this. (More)

Weegy: Gravity holds a galaxy together. User: _________ makes up most matter in the universe. A. Gas B. Stars C. Rocks D. Dark matter (More)

Weegy: Andromeda - is the largest galaxy in our Local Group. User: Our solar system is located in which part of the Milky Way? A. disk B. halo C. nucleus D. central bulge Weegy: The part of the Milky Way where our solar system is located is: DISK. User: What can be found in the disk of a barred spiral galaxy? Select all that apply. A. halo B. arms C. central bulge D. open clusters of stars (More)

Weegy: The disk is the part of the Milky Way that has the highest density. User: Where can old, metal-rich stars be found in the Milky Way? A. the halo B. the disk C. the nucleus D. the central bulge Weegy: The central bulge is where old, metal-rich stars can be found in the Milky Way. User: Where can young, metal-rich stars be found in the Milky Way? A. the halo B. the disk C. the nucleus D. the open clusters Weegy: The disk is where can young, metal-rich stars can be found in the Milky Way. User: What is the approximate age of the Milky Way? A. 3.5 billion years B. 4.5 billion years C. 15 billion years D. 15 trillion years Weegy: The approximate age of the Milky Way is: 15 billion years. User: Which of these holds a galaxy together? A. disk B. gravity C. open clusters D. globular clusters Weegy: Gravity holds a galaxy together. (More)

Weegy: Stars are born, they go through changes, and then they die. User: What round object is formed when gas and dust are pulled together by gravity, but before nuclear fusion has begun? A. star B. nebula C. protostar D. giant molecular cloud Weegy: Star is formed when gas and dust are pulled together by gravity, but before nuclear fusion has begun. User: Which substance has two neutrons? A. H-2 B. He-2 C. He-3 D. He-4 Weegy: H-2 and He-3 both have one neutron. User: Which particle rarely interacts with matter? A. proton B. photon C. positron D. neutrino Weegy: Neutrino is a particle that rarely interacts with matter. User: When does a star reach equilibrium? A. when it no longer produces any antimatter B. when the amount of hydrogen equals the amount of helium C. when gravity is balanced by the outward force of nuclear fusion D. when it reaches the point where nuclear fusion is about to begin Weegy: A star reach equilibrium when gravity is balanced by the outward force of nuclear fusion. User: A _____ is a massive ball of hot gas (plasma) that creates its own energy via nuclear fusion. A. star B. nebula C. protostar D. giant molecular cloud Weegy: Star is a massive ball of hot gas (plasma) that creates its own energy via nuclear fusion. (More)