Black hole and Redshift

What is Einstein’s explanation of gravity?

• Curved spacetime

• Transfer of bosons

• Objects are tied

When observing black holes, we can observe the light from…

• Event horizon

• Singularity

• Accretion disk

Mass of black holes can only increases.

• True

• False

We use LIGO to…

• Take photo of the universe

• Record CMB

• Detect gravitational wave

We use EHT to…

• Take photo of blackholes

• Detect gravitational waves

• Record CMB

What is Schwarzschild Radius?

• Radius of accretion disks

• Radius of event horizon

• Radius of singularity

• I don’t know

The Sun might appear … in a VERY distant galaxy

• Red

• Yellow

• Blue

• White

Wien’s Law suggests that a star’s…

The following are methods to measure redshift EXCEPT

• Temperature method

• CMB method

• Redshift method

• Gravitational wave method

A galaxy with on side redshifted and another side blue-shifted is…

• Regressing

• Approaching

• Rotating

• Singing, dancing, rapping and playing basketball