Science News
Starship Flight 15 Launches Nov. 13 With 26 Starlink V3 Satellites
SpaceX plans Starship's 15th flight test for Nov. 13, and skywatchers across the contiguous U.S. may spot the Ship stage in orbit afterward.
satellites
Science Explained
How GPS Works: Satellites, Atomic Clocks and Relativity
Your phone never sends anything to a GPS satellite. It just listens to a few dozen very precise clocks in orbit and does some fast arithmetic.
Earth
How Sea Level Is Measured: Tide Gauges, Satellites and GPS
A tide gauge in New York harbor has logged the water since 1856, and a satellite now maps almost the whole ocean every 10 days. Here is how the numbers are made.