Cometa

The video explores the nature and history of comets, which were once seen as omens. Comets are icy bodies from the solar system's outskirts, composed of a nucleus, coma, and tail. They differ from asteroids and meteors in structure and location. Comets are categorized by their orbital periods into short-period and long-period comets. Halley's Comet, a well-known short-period comet, is expected to return in 2061. The video concludes with a reflection on the future of comets and their appearances.

What were comets traditionally considered to be a sign of?

• Good fortune

• Imminent death of a king

• A bountiful harvest

• A new beginning

What is the core of a comet primarily made of?

• Molten lava

• Gas and plasma

• Rocks, dust, and ice

• Liquid water

How is a comet's tail formed?

• By the comet's rotation

• By the sun's radiation pushing dust particles

• By the comet's magnetic field

• By the gravitational pull of planets

Where do comets primarily reside in the solar system?

• Near the sun

• In the outer solar system

• In the asteroid belt

• Between Mars and Jupiter

What distinguishes comets from asteroids?

• Their color

• Their speed

• Their size

• Their coma and tail

How often does Halley's Comet orbit the sun?

• Every 100 years

• Every 50 years

• Every 76 years

• Every 200 years

When is Halley's Comet expected to return?

• 2075

• 2061

• 2050

• 2045