By: Elizabeth Delfeld and Sam Vilmenay 95% of earths diameter. Diameter 12,107 million km. 80% Earths mass. (486,924 kg) Gravitational force is Would feel lighter on Venus than Earth. Gravitational force is Would feel lighter on Venus than Earth. 108,200,000 km. 2 nd Planet from the sun. Venus is hotter than Mercury. Rotates west to east instead of east to west. One day is 243 Earth days. One year is 225 Earth days. You would be one year old before you are one day old. Average temp. on Venus 457 C 482 C. Its the brightest planet in space. Hot enough to melt a cannon ball. Hot because Venus because of the carbon dioxide atmosphere. Has volcanoes that are now inactive. Surface made of mostly harden lava. Has hills and valleys. Has 1 mountain range. Tallest mountain 1.6 km higher than Mount Everest. Dried up riverbed on Venus that is longer than any river on Earth. Impossible to see the surface through clouds No oxygen. Only toxic gasses. (carbon dioxide) Pressure is 90x Earths atmosphere pressure. Lots of greenhouse gasses. From the Romans. Named after the Greek goddess Aphrodite and the Babylonian god Ishtar. Believed to be Earths sister planet because they are almost the same size and made up of almost all the same materials. Severe weather- Wind blows at about 320 km per hour. Lightning is up to 25 flashes per second. Occasional thunder. Venus and Mercury are the only 2 planets without moons. Gallagher, Amie. The Inner Planets. Connecticut: Grolier Edu.,1998. Print Landau, Elaine. Venus. Connecticut: Childrens Press, Print. Oxlade, Chris. Mercury, Mars & Other Inner Planets. New York: Rosen Publishing, 2008