Top 13 Space startups in San Francisco
Dec 12, 2025
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15
1
Funding: $753.5M
Astranis is a space startup that builds small and low-cost telecommunications satellites to provide internet access in remote regions.
Astranis is a space startup that builds small and low-cost telecommunications satellites to provide internet access in remote regions.
2
Funding: $573.9M
Planet is an aerospace and data analytics company that builds small satellites and delivers information about the changing planet.
Planet is an aerospace and data analytics company that builds small satellites and delivers information about the changing planet.
3
Funding: $328M
Varda is a space manufacturing startup that focuses on creating products and drugs in space for terrestrial applications.
Varda is a space manufacturing startup that focuses on creating products and drugs in space for terrestrial applications.
4
Funding: $326.2M
Loft Orbital deploys space infrastructure as a service, providing rapid, reliable, and simplified access to space.
Loft Orbital deploys space infrastructure as a service, providing rapid, reliable, and simplified access to space.
5
Funding: $239M
Capella Space is an information services company that provides on-demand 24/7 SAR data for government and commercial customers.
Capella Space is an information services company that provides on-demand 24/7 SAR data for government and commercial customers.
6
Funding: $55.4M
OSK is a satellite-based hyperspectral monitoring service helping organizations meet their sustainability and security goals.
OSK is a satellite-based hyperspectral monitoring service helping organizations meet their sustainability and security goals.
7
Funding: $50M
Aetherflux is building a constellation of small LEO satellites to beam solar energy to Earth using infrared lasers. This approach differs from traditional space-based solar power (SBSP) concepts, which rely on massive geostationary platforms transmitting power via microwaves. The US Defense Department has allocated funding for the development of this technology to ensure the energy supply to remote military bases and contested areas. Additionally, the Aetherflux satellites will have an orbital computing node that utilizes continuous solar power and radiative cooling to enable high-performance data processing in space. The node uses optical inter-satellite links and advanced relay networks to ensure continuous availability, consistent with ground-based application servers.
Aetherflux is building a constellation of small LEO satellites to beam solar energy to Earth using infrared lasers. This approach differs from traditional space-based solar power (SBSP) concepts, which rely on massive geostationary platforms transmitting power via microwaves. The US Defense Department has allocated funding for the development of this technology to ensure the energy supply to remote military bases and contested areas. Additionally, the Aetherflux satellites will have an orbital computing node that utilizes continuous solar power and radiative cooling to enable high-performance data processing in space. The node uses optical inter-satellite links and advanced relay networks to ensure continuous availability, consistent with ground-based application servers.
8
Funding: $13.6M
Farcast is a satellite tech company that builds advanced satcom user terminals.
Farcast is a satellite tech company that builds advanced satcom user terminals.
9
Funding: $8.4M
Aethero builds space computers to let satellites instantaneously process data on the edge.
Aethero builds space computers to let satellites instantaneously process data on the edge.
10
Funding: $5.9M
Cascade Space offers tools and ground station services for designing and analyzing communication systems in deep space missions.
Cascade Space offers tools and ground station services for designing and analyzing communication systems in deep space missions.
