Interactive Stars Size.

Stars Comparison Puzzle is a short online game, to sort 10 stars by size and find the biggest star. Astronomy learning exercise to study difference in star masses and the biggest star discovered. Fun educational game, suitable for online lessons, interactive classes and exciting homework.

There are 10 different stars on the screen. Drag and drop them in the correct order by the size of the star. Check the actual size comparison after the stars is sorted. Make it for less than 10 tries for a good school mark.

These are some notable stars, includinge the biggest star dicovered by astronomers so far:

• 1. TRAPPIST-1 = 0.12 of the Sun
  Type: Ultra-cool Red Dwarf (M8V)
  Radius: Approximately 0.12 times the Sun
  Diameter: About 167 000 kilometers (104,000 miles)
  Location: Constellation Aquarius
  Notable Fact: Hosts a system of seven Earth-sized planets, three of which are in the habitable zone.
• 2. Alpha Centauri B = 0.85 of the Sun
  Type: K1V (Orange Dwarf)
  Radius: Approximately 0.86 times the Sun
  Diameter: About 1.2 million kilometers (750,000 miles)
  Location: Constellation Centaurus
  Notable Fact: Part of the Alpha Centauri star system, which is the closest star system to the Solar System.
• 3.The Sun
  Type: Yellow Dwarf (G-type main-sequence star)
  Radius: ~695 700 kilometers (432,288 miles)
  Diameter: ~1.39 million kilometers (864,000 miles)
  Location: Center of our Solar System
  Notable Fact: Provides the necessary energy to sustain life on Earth.
• 4. Arcturus = 15 000 Suns
  Type: K1.5III (Orange Giant)
  Radius: Approximately 25.4 times the Sun
  Diameter: About 35 million kilometers (22 million miles)
  Location: Constellation Bootes
  Notable Fact: Arcturus is the fourth brightest star in the night sky and the brightest star in the northern celestial hemisphere.
• 5. Aldebaran = 86 000 Suns
  Type: Red Giant
  Radius: ~44.2 times the Sun
  Diameter: ~61 million kilometers (38.3 million miles)
  Location: Constellation Taurus
  Notable Fact: The brightest star in the constellation Taurus and part of the zodiac.
• 6. Rigel = 343 000 Suns
  Type: Blue Supergiant (B8Ia)
  Radius: ~78 times the Sun
  Diameter: ~108 million kilometers (67.4 million miles)
  Location: Constellation Orion
  Notable Fact: One of the brightest stars in the night sky.
• 7. Antares A = 314 432 000 Suns
  Type: Red Supergiant
  Radius: ~680 times the Sun
  Diameter: ~947 million kilometers (588 million miles)
  Location: Constellation Scorpius
  Notable Fact: Often referred to as the "heart of the scorpion."
• 8. Betelgeuse = 857 375 000 Suns
  Type: Red Supergiant
  Radius: ~764 times the Sun
  Diameter: ~1.53 billion kilometers (950 million miles)
  Location: Constellation Orion
  Notable Fact: One of the most recognizable stars in the night sky.
• 9. VY Canis Majoris = 2 408 080 000 Suns
  Type: Red Hypergiant
  Radius: ~1420 times the Sun
  Diameter: ~2.84 billion kilometers (1.77 billion miles)
  Location: Constellation Canis Major
  Notable Fact: Extremely luminous and variable.
• 10. UY Scuti = 5 510 032 000 Suns
  Type: Red Supergiant
  Radius: ~1700 times the Sun
  Diameter: ~3.4 billion kilometers (2.1 billion miles)
  Location: Constellation Scutum
  Notable Fact: Currently considered the largest known star by diameter.