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In this diagram, the galaxy at the left side is a(n) Galaxy Classification(1).png

The Milky Way is often considered to be an intermediately wound, barred spiral, which would be type ________ according to Hubble.

That quasars were at cosmological distances yet appeared like ordinary faint stars meant:

What is the nearest huge cluster of thousands of galaxies, to which the Local Group may belong?

According to Hubble’s Law, the greater a galaxy’s redshift, the

In what sense are the quasars “quasi-stellar”?

Change the date to July 5, 2009. What is the approximate angular separation between the star Antares and the Moon on this date?

Change the time flow rate to 1 day (solar day). Note the position of the Moon and the background stars and click the Step Time Forward button to advance time by 1 solar day. Then change the time flow rate to 1 sidereal d. (sidereal day) and watch the Moon and stars in the view when you click the Step Time Forward button again, this time to advance time by 1 sidereal day. Repeat these steps to decide which of the following statements is NOT correct.

Place the adaptive hand cursor over the star Antares. How far away from you (the observer) is Antares?

The Galactic Year is the time for our solar system to orbit the Galaxy; it is about