Evolution of Stars
Specific Star Questions
Specific Galaxy Questions
Specific Galaxy Questions
The Sun
Random Star Questions
Random Star Systems Questions
Random Star Systems Questions
Secret Level:
Secret Facts about Stars
Secret Facts about Stars
100
When a massive star runs out of hydrogen, it expands and will make all kind of elements until it starts forming Iron. What happens if the Star has the only iron left?
Supernova- When it has only iron left, gravity will collapse the star until it explodes from the pressure
100
The closest star to us is the...
a) Jupiter c) The Sun
b) The Moon d) Proxima B
c) The Sun
100
How many stars do we have in our Solar System?
The Sun is a 4.5 billion-year-old yellow dwarf star – a hot glowing ball of hydrogen and helium – at the center of our solar system. It’s about 93 million miles (150 million kilometers) from Earth and it’s our solar system’s only star. Without the Sun’s energy, life as we know it could not exist on our home planet.
100
Polaris is a star in the northern circumpolar constellation of Ursa Minor. It is designated α Ursae Minoris (Latinized to Alpha Ursae Minoris) and is commonly called the ... Star or Pole Star.
a) South Star c) Western Star
b) North Star d) Eastern Star
b) North Star
100
A bigger star would live ... than a smaller star. Our Sun is considered ...
a) longer, young c) shorter, middle-aged
b) shorter, young d) longer, middle-aged
The more massive a star, the shorter its lifespan. A very massive star may live only tens of millions of years, while a cool dwarf will shine on for billions of years. At an age of about 4.5 billion years, our Sun is considered middle-aged.
200
After 10 billion years, the small star will run out of hydrogen and starts fusing helium, which causes the star to...
a) make a supernova c) expand to a red giant
b) create life d) become a black hole
c) expand to a red giant
200
A large cluster of stars, planets, and gases...
a) solar system c) galaxy
b) nebula d) quasar
c) galaxy
200
What is the temperature of our Sun?
5777 Kelvin
200
Is there any possibility our sun could have life?
The Sun could not harbor life as we know it because of its extreme temperatures and radiation. Yet life on Earth is only possible because of the Sun’s light and energy.
200
When you look at a star(or any object in space) you are seeing how it...
a) Looks pretty, oh my c) Looks in the future
b) Looked in the past d) Changing its color everytime you blink
When you look at a star(or any object in space) you are seeing how it looked in the past. The Sun appears as it was 8.5 minutes ago. The view of Alpha Centauri is 4.3 years old, while the appearance of Sirius is more than 8 years old.
300
What is the final evolutionary state of stars whose mass in not enough to become a neutron star or a black hole?
White dwarfs are thought to be the final evolutionary state of stars whose mass is not high enough to become a neutron star or black hole. This includes over 97% of the other stars in the Milky Way.
300
... is almost twice as bright as Canopus, the next brightest star. ... is a binary star consisting of a main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, termed Sirius B.
a) Sirius c) Polaris
b) Canopus d) Thebe
Sirius is almost twice as bright as Canopus, the next brightest star. Sirius is a binary star consisting of a main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, termed Sirius B. The distance between the two varies between 8.2 and 31.5 astronomical units as they orbit every 50 years
300
On Earth, in almost every very specific event people encounter headache, even if they are healthy. How is the Sun relevant to this?
Solar storms. 54 years ago they almost led to a nuclear war. On 23 May 1967, during the hottest days of the Cold War, the United States Air Force missile alert system suddenly ceased to function. All radar stations in the northern hemisphere seem to have been jammed. The Americans thought it was a harbinger of a nuclear strike by the Soviet Union. Thinking that the radar was under attack, they began to prepare for battle. Soon, they realized it was a solar storm.
300
... is a triple star system located just over four light years, or about 25 trillion miles, from Earth. While this is a large distance in terrestrial terms, it is three times closer than the next nearest Sun-like star.
a) Mesopotamia c) Ursa Minor
b) Alpha Centauri d) Ursae Minoris
b) Alpha Centauri
300
What happens if the white dwarf runs out of its remaining energy?
When the white dwarf runs out of its remaining energy, it loses its brightness and becomes a brown dwarf.
400
After the star explodes, the star can do two different things based on its size, what are they?
1) It can form a very dense NEUTRON STAR
2) It can form the most densest object in the universe, a BLACK HOLE
400
How is called the grouping of stars that creates an image?
a) poster c) Polaris
b) constellation d) Matrix
b) constellation
400
When hydrogen fusion in its core has diminished to the point at which the Sun is no longer in hydrostatic equilibrium, its core will undergo a marked increase in density and temperature while its outer layers expand, eventually transforming the Sun into a...
a) planet similar to Jupiter c) a black hole
b) a red giant d) George
b) red giant.
It is calculated that the Sun will become sufficiently large to engulf the current orbits of Mercury and Venus, and render Earth uninhabitable – but not for about five billion years. After this, it will shed its outer layers and become a dense type of cooling star known as a white dwarf, and no longer produce energy by fusion, but still glow and give off heat from its previous fusion.
400
What does the color of the star tell us about?
The Star's temperature: very hot stars are blue and less hot stars are Red.
Explanation:
Temperature color diagram is attached.
Stars are classified as O B A F g K M. as the dropping temperature from O to M.
400
How did this star, Polaris, helped people throughout centuries?
Polaris is the brightest star in the constellation of Alpha Ursae Minoris, and is readily visible to the naked eye at night. The position of the star lies less than a degree away from the north celestial pole, making it the current northern pole star.
Historically, the stable position of the star in the northern sky has made it useful for navigation.
500
After the star runs out of helium, the star will try to combine carbon, which the star can't combine. So the gas spreads apart from the star leaving behind a...
a) black hole c) newborn star
b) nebula d) carbon dense white dwarf.
d) carbon dense white dwarf.
500
What is our galaxy?
a) M&M's c) Snickers
b) The Milky Way d) Mars
"The Milky Way"
500
The Sun's solar winds are building a special ... wall that protects our Solar System from devastating gamma rays emitted by the black hole in the center of our galaxy, "The Milky Way", and other space objects.
a) hydrogen c) neon
b) helium d) oxygen
First detected in 1992 by the two Voyager spacecraft, the hydrogen wall has been theorized to exist at the very edge of the heliosphere. This bubble-like region of space is composed of cosmic rays — solar wind particles emanating from the sun. The Sun's heliosphere protects the planets and other objects in the solar system from some of these dangerous particles. The Earth's magnetosphere and atmosphere protect life on Earth from cosmic rays that make it through the heliosphere. Studying the heliosphere will help us to prepare adequate shielding during future space travel.
500
In 185 AD Chinese astronomers were the first to record a ..., this is now classified as SN 185.
a) UFO c) Sun
b) Supernova d) 超新星
In 185 AD Chinese astronomers were the first to record a supernova(超新星 ), this is now classified as SN 185.
500
What is the heaviest object or pair of objects (like Kuiper Belt) are in our Solar System?
a) Sun c) Jupiter
b) Asteroid Belt & Kuiper Belt d) All planets, Kuiper Belt, Asteroid Belt, and other space objects combined(except for Sun)
The Sun alone constitutes 99% of the total mass of our solar system.