Hey, can anyone help me with this astronomy presentation about GAIA? - How the ESA is using Gaia mapping and the purpose of the ESA Gaia Mission
- Other ways that Gaia mapping is being used outside of astronomy-related endeavors
- Any additional information that you find that is interesting or relevant to Gaia mapping, either astronomy or non-astronomy based

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?