The video discusses early celestial observations, focusing on the moon and Venus. In 1761, Mikhail Lomonosov observed Venus passing across the sun, noting its fuzzy appearance, indicating an atmosphere. For centuries, Venus's atmosphere remained a mystery. Russian probes later explored Venus, revealing its harsh conditions.

Who was the astronomer that observed Venus passing across the sun in 1761?

• Johannes Kepler

• Isaac Newton

• Mikhail Lamonosov

• Galileo Galilei

What did Mikhail Lamonosov notice about Venus that indicated it had an atmosphere?

• It was brighter than the sun

• It had a fuzzy edge

• It was larger than expected

• It moved faster than the moon

For how many years did the mystery of Venus's atmosphere remain unsolved?

• 150 years

• 200 years

• 100 years

• 250 years

What happened to the Russian probe sent to explore Venus?

• It landed successfully

• It was destroyed by a storm

• It was crushed 15 miles above the surface

• It returned to Earth with samples

What remains a mystery about Venus despite the probe's mission?

• The nature of its surface

• The color of its clouds

• The size of its atmosphere

• Its distance from the sun