Found Dozens of Ancient Cryovolcanoes on Ceres! SciShow News

The video discusses cryovolcanoes, which emit slushy ices instead of lava, found on gas giant moons, Pluto, and Ceres. NASA's Dawn spacecraft discovered 32 cryovolcano remnants on Ceres, revealing insights into its geological history. Cryovolcanoes differ from Earth's volcanoes, with less activity and icy magma originating from the crust. The video also covers satellite flares, particularly Iridium flares, which are becoming rare as new satellites replace the old ones. These changes impact both sky watchers and astronomers.

What is a cryovolcano?

• A volcano that emits water vapor

• A volcano that emits gas

• A volcano that emits icy slush

• A volcano that emits molten rock

Where was the first cryovolcano discovered by NASA's Dawn spacecraft?

• Ceres

• Pluto

• Europa

• Mars

How often does Ceres get a new cryovolcano on average?

• Every 10 million years

• Every 50 million years

• Every 100 million years

• Every 500 million years

What is a satellite flare?

• A meteor shower

• A UFO sighting

• A satellite reflecting sunlight

• A comet passing by

What are Iridium flares?

• Flares from satellites made of Iridium

• Flares from satellites with silver-coated antennas

• Flares from satellites orbiting Mars

• Flares from satellites in geostationary orbit

Why are astronomers happy about the deorbiting of Iridium satellites?

• They are more energy-efficient

• They are easier to track

• They reduce light pollution

• They provide better data

What is the expected outcome of replacing the Iridium satellite network?

• More frequent flares

• No more flares

• Increased number of flares

• Brighter flares