ScienceAugust 18, 2026
millibars
MIL-i-barz
Definition
A unit of atmospheric pressure widely used in meteorology, equal to 100 pascals.
Etymology
Derived from the Latin 'mille' (thousand) and the Greek 'baros' (weight). It was adopted in the early 20th century as a metric unit for measuring atmospheric pressure.
In the news
The article uses millibars to describe the thin atmospheric pressure on Mars, explaining why pure water struggles to exist in a liquid state there.
NASA’s Viking 2 lander photographed frost forming on Mars in the 1970s. Nearly half a century later, a University of Arkansas researcher fed its old weather measurements into a model and found something Viking’s scientists never knew: for roughly 30 Martia
Read the full article ↗Space Daily