Astronomy

Which constellation has pointer stars?

• The constellation with pointer stars is Taurus.
• The constellation with pointer stars is Orion.
• The constellation with pointer stars is Cassiopeia.
• The constellation with pointer stars is Ursa Major.

What is a circumpolar constellation?

• A circumpolar constellation is a constellation that never sets below the horizon from a specific location on Earth.
• A circumpolar constellation is a constellation that can be seen from any location on Earth.
• A circumpolar constellation is a constellation that only appears during certain times of the year.
• A circumpolar constellation is a constellation that is only visible during the day.

What is a galaxy that has a black hole in the center?

How far away is the Alpha Centauri?

• 1,000 light-years
• 100 light-years
• 4.367 light-years
• 10 light-years

What are stars made of?

• Stars are made of rocks and minerals.
• Stars are made primarily of hydrogen and helium.
• Stars are made of water and ice.
• Stars are made of gold and silver.

How do elements that make up a star change as it ages?

• The elements that make up a star change due to weather conditions as it ages.
• The elements that make up a star change due to nuclear fusion reactions as it ages.
• The elements that make up a star change due to gravitational pull as it ages.
• The elements that make up a star remain the same throughout its lifetime.

what is a cepheid variable used for

• Measuring astronomical distances.
• Determining the age of stars.
• Tracking the movement of planets.
• Studying the composition of galaxies.

what does stability mean in a star

• The number of planets orbiting the star
• The color of the star
• Balance between gravity and nuclear fusion
• The size of the star

stages of life cycle of a star

• The stages of the life cycle of a star are: 1. Nebula 2. Protostar 3. Main Sequence 4. Red Dwarf 5. Planetary Nebula or Supernova 6. White Dwarf or Neutron Star or Black Hole
• The stages of the life cycle of a star are: 1. Nebula 2. Protostar 3. Main Sequence 4. Red Giant or Supergiant 5. Planetary Nebula or Supernova 6. Brown Dwarf
• The stages of the life cycle of a star are: 1. Nebula 2. Protostar 3. Main Sequence 4. Red Giant or Supergiant 5. Planetary Nebula or Supernova 6. Red Dwarf
• The stages of the life cycle of a star are: 1. Nebula 2. Protostar 3. Main Sequence 4. Red Giant or Supergiant 5. Planetary Nebula or Supernova 6. White Dwarf or Neutron Star or Black Hole

how many times brighter is a first magnitude star from a Second magnitude star

• 10
• 2.512
• 100
• 0.5