Katherine Johnson
![](/sites/default/files/careers/katherine-johnson-credit-nasa.jpg)
Credit: NASA
Occupation: Mathematician
Year born: 1918
Research Areas: Rocket Flightpaths, Trajectories, Orbital Mechanics
"I loved going to work every single day"
In partnership with the Faulkes Telescope Project
Occupation: Mathematician
Year born: 1918
Research Areas: Rocket Flightpaths, Trajectories, Orbital Mechanics
"I loved going to work every single day"
Wedi’i anelu at ddisgyblion 11-14 oed, mae’r gweithgaredd hwn yn gwneud defnydd o algebra sylfaenol a graffiau i atgyfnerthu'r syniadau o effeithiau disgyrchiant a sut mae’r effeithiau yna yn dibynnu ar le ydych chi yng Nghysawd yr Haul.
Occupation: Mathematician, Astronomer, and Physicist
Year born: 1643
Research Areas: Optics, maths, motion, gravity
Occupation: Astronomer, Mathematician, Scientist, Teacher
Year born: 1571
Research Areas: Planetary motion, optics, geometry
Occupation: Astronomer, Mathematician, Engineer
Year born: 1564
Research Areas: speed, velocity, motion, astronomy, tides
Astronomers use angles a lot to work out where things are in the sky. We can measure the size of an object in the sky and mark its position by using angles. If we know how much of the sky an object covers (as an angle) and how far away it is - we can work out its actual size.