It's tricky to give a single "thickness" for each planet's atmosphere because it gradually thins out. Here's a breakdown by planet, focusing on the scale height, which is a useful measure of how quickly the atmosphere thins:

Terrestrial Planets

* Mercury: Mercury has a very thin exosphere, essentially a trace atmosphere. Its scale height is around 1000 km (621 miles).

* Venus: Venus has an incredibly thick atmosphere, much denser than Earth's. Its scale height is about 16 km (10 miles).

* Earth: Earth's atmosphere has a scale height of about 8.5 km (5.3 miles).

* Mars: Mars has a very thin atmosphere, with a scale height of about 11 km (6.8 miles).

Gas Giants

* Jupiter: Jupiter's atmosphere is massive and deep, extending for thousands of kilometers. Its scale height is around 27 km (17 miles) in its upper layers.

* Saturn: Similar to Jupiter, Saturn has a deep atmosphere with a scale height of around 24 km (15 miles).

* Uranus: Uranus has a relatively thin atmosphere compared to Jupiter and Saturn, with a scale height of around 20 km (12 miles).

* Neptune: Neptune has a thicker atmosphere than Uranus, with a scale height of about 22 km (14 miles).

Key Points:

* Scale height is the altitude where the atmospheric pressure drops to 1/e (about 37%) of its value at a reference level.

* The thicker the atmosphere, the shorter the scale height.

* The scale height is influenced by factors like temperature, gravity, and the composition of the atmosphere.

Important Note: The atmospheres of planets are complex and constantly changing. The values provided are approximations and may vary depending on the specific location and time.