Astrocast has announced that its test launch for its low-earth-orbit (LEO) IoT-focused satellite network was a success. Launched by Spaceflight, on the back of a SpaceX rocket from Vandenberg Air Force Base, the startup is hoping to launch its own LEO constellation that it can use to serve the 90% of the earth’s surface that Astrocast claims is not covered by cellular networks. Now, given that around 70% of the earth’s surface is actually covered in water, it’s worth stressing that there isn’t a need to have complete global coverage for the vast majority of applications. Unless your use-case involves maritime shipping and/or boats, then this 90% claim is something of a moot point. However, there’s definitely a need to…