The letters G U T  from the GUT Era stand for Grand Unified Theory. This theory explains how 3 of the fundamental forces are indistinguishable. Which three forces does it describe?

There is star formation in Elliptical Galaxies.

Below you will find 5 numbered images. Match the image number with the correct galaxy classification. 1–     2– 3–     4– 5–

Below you will find 5 numbered images. Match the image number with the correct galaxy classification. 1–     2– 3–     4– 5–

Edwin Hubble believed that galaxies morphed from one type into another. What is the name of the scheme he developed?

Edwin Hubble believed that galaxies morphed from one type into another. What is the name of the scheme he developed?

Identify each of the layers of the sun shown above.

Use the following table to answer the question. Star Apparent Magnitude (m) Absolute Magnitude (M) m-M Spectral Type 1 -1.46 1.46 0 F0 2 -0.72 -2.5 1.78 A1 3 0.12 -8.1 8.22 B8 4 0.41 -7.2 7.61 M2 5 -0.27 4.4 -4.67 G2     Which star is exactly 10 parsecs away?

Use the following table to answer the question. Star Apparent Magnitude (m) Absolute Magnitude (M) m-M Spectral Type 1 -1.46 1.46 0 F0 2 -0.72 -2.5 1.78 A1 3 0.12 -8.1 8.22 B8 4 0.41 -7.2 7.61 M2 5 -0.27 4.4 -4.67 G2     Which star has the largest mass?

The most abundant element in the sun is