Stars and Galaxies

What is the largest star ever to be discovered

in the universe and the star is also known as?

• Stephenson 2-18

• UY-Scuti

• Betelgeuse

How are stars formed?

• Due to star forming nebula a knots contain sufficient mass that the gas and dust and begins to collapse from gravitational attraction.

• Stars are formed. When it collapses the pressure from gravity causes the material at the center to heat up creating a protostar, then this core becomes hot enough to ignite fusion then a star is born.

• They emerge from the giant, donut-shaped disk of gas and dust that circles young stars. Gravity and other forces cause material within the disk to collide.

• When they evolve, stars form within them. Entire galaxies can collide, changing their appearance. Looking deep into space.

What is the solar mass of Stephenson 2-18?

• 120 - 1,200 solar masses

• 4.3 million solar masses

• 20 - 100 solar masses

• 30,000 - 50,000 solar masses

What is the maximum lifespan of Stephenson 2-18

• 25 to 23 million

• 20 to 30 million

• 6.8 billion

• 7 billion

What is our star in our solar system?

• Sun

• UY- scuti

• Rigel

• Betelgeuse

Tags

NGSS.MS-ESS1-1

What is the surface temperature of UY-scuti?

• 3,200 K

• 5,772 K

• 3,365 K

What is the Radius of R136a1?

• 29 million km

• 69 million km

• 45 million km

• 23 million km

• 21 million km

What is the kind of galaxy that has 100 trillion stars?

• Triangulum galaxy

• Andromeda galaxy

• Milky Way

• IC 1101

What is the largest galaxy ever to be discovered

in the universe is also known as?

• Alcyoneus

• IC 1101

• Triangulum galaxy

• Andromeda galaxy

What is the magnitude of Alcyoneus?

• 124 . 132 Magnitude

• 102 . 106 Magnitude

• 17 . 16 Magnitude

• 32 . 29 Magnitude