Space has been a part of the communications networks since the communications satellite Telstar was first put into orbit in 1962. I remember as a kid tracking Telstar across the sky. Space today is an increasingly important part of communications. The following are a few pieces of space news I recently found to be interesting..
Low-Orbit LEO. The Spanish startup Kreios Space is working to develop a new type of satellite that can fly at lower altitudes. LEO satellites today typically fly at altitudes from 220 to 350 miles above the Earth. Kreios is working on satellites that would fly at an altitude of 125 miles. LEO satellites for companies like Starlink are parked high enough to avoid the drag caused by the upper atmosphere. Kreios would be able to fly lower by using air intake to drive electric motors that would generate enough thrust to maintain altitude. This would allow for long-duration orbits and the ability to move the satellite without needing any traditional fuel.
It’s not hard to understand the advantage of flying at lower altitudes. The satellites would be able to observe the ground in much greater detail. Communications and broadband satellites at a lower altitude would mean lower latency and faster communications times. The company thinks the improvement in performance would be between 3 and 16 times better than the current LEO satellites flying at higher altitudes.
Bluetooth Satellites. Hubble Network is a startup that is building a fleet of satellites to communicate with Bluetooth devices. The Bluetooth devices involved are different than the typical Bluetooth device that is designed to send a lot of data for a short distance. Instead, Hubble will connect to low-power Bluetooth sensors that only transmit a small amount of data. Hubble launched its first two satellites in 2024, now has seven satellites in orbit, and plans on having a full satellite constellation in place by 2028.
The advantage of the technology for Hubble customers is the use of low-power Bluetooth devices that are far less costly than connecting to cellular technology. Sensors can be placed anywhere on the planet that are out of reach of cellular networks and can be used for functions like tracking the movement of cargo ships. Hubble is already tracking millions of devices and expects to be able to keep track of billions. The company today is working with customers like Life360, which has a location-based safety service that can let families and friends share real-time locations with each other. The sensors can be used to track vehicle fleets and can provide instant feedback on things like driving speeds.
Space Robots. I can’t think of a space sci-fi movie that didn’t have worker robots in the background taking care of the maintenance required to work in space. I saw an article about Icarus, a startup that is raising money to develop robot workers to replace astronauts on the ISS space station. That set me on a search to understand the space robotics market, and there is a space robot-race underway. Established companies like Maxar Technologies, Northrup Grumann, NDA, Honeybee Robotics, and Motiv Space Systems have been active in the field. They are joined by numerous startups, including Astrobotic Technology, GITAI, Rovial Space, BigDipper Exploration Technologies, Space 11, and Novium.
We’ve already seen space robots for many years, like the various Mars rovers like Nasa’s Sojourner, Spirit, Opportunity, Curiosity, and Perseverance, and China’s Zhurong. The companies listed are working on robots of all sizes, from the inchworm robots being developed GITAI to moon rovers being developed by several companies.
Asteroid Mining. There have now been several trips to explore asteroids and bring back samples. This includes NASA’s OSIRIS-Rex mission that returned samples from the Bennu asteroid in 2023 and the Japanese Hayabusa-2 mission, which returned samples from the Ryugu asteroid in 2020. These missions were government-funded and cost hundreds of millions of dollars, and were funded for scientific research purposes.
Startup Karman+ is working on being able to fund a round trip to asteroids for roughly $10 million, with the cost to hopefully drop in the future. This is the first step in developing an asteroid mining industry that would use robots to mine valuable metals from asteroids and round-trip rockets to ferry materials back to Earth orbit. This first mission only plans to bring back one kilogram of material and is a test of concept for the technology. The ultimate technology will need to mine the materials in space needed to create the fuel needed to return heavier payloads back to Earth.