What can be observed only by observing its effects on gravity.1 dark matter 2.solar nebula 3.gas and dust 4.planetesimal

Related Questions

• Double-paned windows are made of multiple layers of glass with gas trapped between them. These offer more____ than single-paned windows and can make a house more energy efficient. a) conduction b) insulation c) convection d) Condensation
• Select the temperature scale that matches each boiling point for water. Water boils at 373 . Water boils at 100 . Water boils at 212 degrees Celsius Degree Fahrenheit Kelvins
• toy car goes 2 meters in 3.1 seconds, find the average speed?
• The atmosphere extends up to an altitude of about _____. 330 miles 200 miles 200 km 50 miles
• ghee freezes from bottom but water freezes from top, why?
• Which of the following statements is TRUE? A. Elements in the same group have the same number of electron shells. B. Elements in the same period have the same number of valence electrons. C.Elements in the same period have similar characteristics, like reactivity and valence electrons. D. Elements in the same group, or family, have similar characteristics, like reactivity and valence electrons.
• How does weathering affect statues?
• Why is apparent depth dangerous for swimmers?
• The first model of the atom was developed through what?
• Why can’t we see black holes? Question 11 options: A.Because they don't want to be seen. B.Because the sun is too far away from them. C.Because they are supermassive. D.Because no light can get out.