Ingredients for Life On a Comet, and Mars's Close-Up

The video discusses the discovery of glycine, an amino acid, on Comet 67P by the Rosetta probe, along with other molecules essential for life, such as phosphorus. This finding supports the theory that life's building blocks may have come from space. The video also highlights Mars' close approach to Earth, making it visible in the night sky, and encourages viewers to support SciShow and consider future Mars missions.

What is the significance of finding glycine on Comet 67P?

• It suggests comets could have brought life's building blocks to Earth.

• It proves life exists on comets.

• It indicates comets are made of water.

• It shows comets are older than Earth.

Why is glycine considered a likely amino acid to find on Comet 67P?

• It is only found on Earth.

• It is the most complex amino acid.

• It is the simplest amino acid and can form without liquid water.

• It requires liquid water to form.

What causes the varying distances between Earth and Mars?

• Earth's orbit is shrinking.

• Mars moves faster than Earth.

• The planets' orbits are elliptical and tilted differently.

• The planets' orbits are circular.

When was the closest approach of Mars to Earth in recent history?

• 2005

• 2020

• 2018

• 2003

What was the purpose of NASA's balloon launch from New Zealand?

• To observe distant galaxies.

• To test a new type of spacecraft.

• To study the atmosphere of Mars.

• For scientific research purposes.