Seismic Waves Help Map the Core of Mars for the First Time

The Moon has a Solid Core Like the Earth

Several space records will be set for the Arab world this weekend. When the first Saudi Astronauts, Rayyana Barnawi and Ali al-Qarni reach the ISS, they will join Al Neyadi from UAE. Barnawi will be the first Arab woman to go to space, and this will be the first time 3 Arab astronauts are in orbit.

Photos from NASA's Mars rover show the red planet's ancient rivers were much wilder than scientists first thought