My thanks to Starstorm  for the links

http://www2.lpod.org/wiki/Februa​ry_23,_2018

https://en.wikipedia.org/wiki/Pr​ime_meridian_(Greenwich)

http://earthsky.org/astronomy-es​sentials/what-is-lunar-x

https://www.merriam-webster.com/​dictionary/matrix

http://andrewplanck.com/whats-ho​t-on-the-moon-tonight/

https://astronomynow.com/2018/02​/15/milky-way-no-longer-little-br​other-to-andromeda-researchers-sa​y/

 https://astronomynow.com/2018/02​/23/hubble-data-indicate-universe​-growing-faster-than-expected/

https://www.nasa.gov/image-featu​re/goddard/2018/osiris-rex-captur​es-new-earth-moon-image

Cheeta’s speed:

68 – 75 mph

In Short Bursts, Running