Mercury (the planet)

What is Mercury's inclination relative to the ecliptic plane?

• 7 degrees

• 6 degrees

• 5 degrees

• 4 degrees

What is Mercury's surface gravity?

• 3.5 m/s^2

• 3.7 m/s^2

• 4.1 m/s^2

• 4.8 m/s^2

True or false: Mercury is tidally locked with the Sun

• True

• False

What is Mercury's spin:orbit resonance with the Sun?

• 1:1

• 1:2

• 3:2

• 3:5

What was the first spacecraft to orbit Mercury?

• Parker Solar Probe

• Mariner 10

• Pioneer 10

• MESSENGER

What was the fate of the MESSENGER probe?

• Slingshot into solar orbit

• Crashed into Mercury's surface

• Missed orbital insertion

• Shutdown due to power issues

When is BepiColombo scheduled to enter Mercury's orbit?

• 2023

• 2024

• 2025

• 2026

The BepiColombo mission is a cooperation between which two primary partners?

• NASA

• ESA

• Roscosmos

• JAXA

What is Mercury's surface pressure?

• Greater than 50 kPa

• ~10 Pa

• ~5 nPa

• Less than 0.5 nPa

True or false: Mercury has the most eccentric (elliptical) orbit of any planet in the Solar System.

• True

• False