venus

what dominates the majority of the surface features across venus geology?

smooth volcanic plains and vast basaltic lava flows cover about 80 percent of the planet.

does venus have global plate tectonics like earth does today?

no venus has a single stagnant lid crust without sliding tectonic plates.

what are tesserae features on the surface of venus?

highly folded and fractured highland regions formed by intense ancient crustal deformation.

how old is the average surface crust of venus estimated to be?

the surface is relatively young between 300 million and 600 million years old.

how many Venus gravity assists did the parker solar probe use

7

how does Venus have a magnetosphere without an internal dynamo

the magnetosphere is induced by the suns particle charging ions in the upper atmosphere and creating a thin magnetosphere

what type of storms exist at the poles

anticyclonic cyclones

what form of oxygen is in Venus atmsohpere

atomic oxygen

what was the compound detected in 2020 in venus’s atmosphere

phosphine, as a trace gas. there is also traces of ammonia

why does carbon form a supercritical fluid instead of gas on venus

the pressure is so high that the carbon gets compressed into a fluid

why is the surface of venus surprisingly uniform in age across the whole globe?

a catastrophic global resurfacing event likely covered almost the entire planet in lava long ago.

what are coronae features found on venus volcanic terrain?

huge ring-shaped structures created when hot mantle plumes push up and flex the crust.

what are arachnoids on venus geological maps?

circular volcanic features with radiating fracture lines that look like giant spider webs.

what are pancake domes found on venus lava plains?

flat circular volcanic domes formed by super thick silica-rich or sticky lava slowly oozing out.

why does Venus not have a dynamo

there is extremely little convection in the venusian mantle

what is the highest mountain range on venus and where is it located?

maxwell montes located in the northern highland continent called ishtar terra.

what are the two main continental-sized highland masses on venus?

ishtar terra in the northern hemisphere and aphrodite terra along the equator.

what is maat mons and why is it important to venus geology?

a massive shield volcano that shows strong evidence of recent or current active lava flows.

why are there so few impact craters on the surface of venus?

dense atmosphere burns up small meteors and ancient lava flows erased old impact marks.

what unique metallic substance coats the high mountain peaks on venus?

a dark metallic snow layer made of lead and bismuth sulfides that condenses at high altitudes.

what are chasmata on venus geology maps?

deep steep-sided canyons or rift valleys formed where the crust pulled apart.

what flow does the circulation in Venus follow

the cyclostrophic flow

which atmospheric cell is the same on earth and Venus

Hadley cell, but the one in Venus covers the entire planet