The universe is roughly ] dark matter, dark energy, and ordinary matter.
Which planet of our Solar System has the highest mass?
Which planet of our Solar System has the highest mass?
Which of the following is the most accurate description of t…
Which of the following is the most accurate description of the formation of the Solar System?
In our Galaxy, young metal-rich stars are found
In our Galaxy, young metal-rich stars are found
A geologically dead moon would show
A geologically dead moon would show
Edwin Hubble discovered Hubble’s Law when he plotted the …
Edwin Hubble discovered Hubble’s Law when he plotted the of galaxies.
What would you expect the overall color of a globular cluste…
What would you expect the overall color of a globular cluster to be?
Most astronomers now agree that dark matter probably does no…
Most astronomers now agree that dark matter probably does not really exist, and rather indicates a fundamental problem in our understanding of gravity.
What is the celestial sphere?
What is the celestial sphere?
Which of the following planets is just past Saturn?
Which of the following planets is just past Saturn?