Concrete is the most common artificial composite material of all and typically consists of loose stones (aggregate) held with a matrix of cement. Concrete is a very robust material, much more robust than cement, and will not compress or shatter even under quite a large compressive force.
2) Y-axis contains absolute brightness Why do astronomers use the H-R Diagram? Astronomers use H-R Diagrams to classify stars and to understand how stars change over time.
Venus has the most tilted axis, 177. 4 degrees Axial tilt of major celestial bodies Object Axial tilt (Â°) Mercury ~0.01 Venus 177.4 Earth 23.439 281 Moon 1.5424 Mars 25.19 Ceres ~4 Pallas ~60 Jupiter 3.13 Saturn 26.73 Uranus 97.77 Neptune 28.32 Pluto 119.61 Makemake Eris.