When observing a quasar, we are probably looking at a stage of evolution in the very early universe
Indicate whether the statement is true or false
TRUE
You might also like to view...
A beta particle is another name for a(n)
a. electron. b. proton. c. neutron. d. helium nucleus. e. photon.
What evidence suggests that the Milky Way contains dark matter?
A) We observe clouds of atomic hydrogen far from the galactic center orbiting the galaxy at unexpectedly high speeds, higher speeds than they would have if they felt only the gravitational attraction from objects that we can see. B) We see many lanes of dark material blocking out the light of stars behind them along the band of the Milky Way. C) We see many dark voids between the stars in the halo of the Milky Way. D) When we observe in different wavelengths, such as infrared or radio, we see objects that don't appear in visible-light observations. E) When we look at the galactic center, we are able to observe a large black hole that is composed of dark matter.
The Sun exerts almost 200 times more force on the oceans of the Earth than the Moon does. Why then, is the Moon more effective in raising tides?
What will be an ideal response?
Several of the tributary canyons of the Valles Marineris on Mars are thought to be formed:
A. when water coming from the volcanoes started flowing through the planet. B. from impacts with irregularly shaped comets and asteroids. C. from a chemical reaction between iron oxide and water. D. when strong wind currents along the equatorial region started blowing out sand. E. when ground water, escaping from opening cracks, flowed and cut a channel through the surface beneath.