A CubeSat is a class of small satellite with a form factor of 10 cm (3.9 in) cubes. CubeSats have a mass of no more than 2 kg (4.4 lb) per unit, and often use commercial off-the-shelf (COTS) components for their electronics and structure. CubeSats are deployed into orbit from the International Space Station, or launched as secondary payloads on a launch vehicle. As of December 2023, more than 2,300 CubeSats have been launched.
A small satellite, miniaturized satellite, or smallsat is a satellite of low mass and size, usually under 1,200 kg (2,600 lb). While all such satellites can be referred to as "small", different classifications are used to categorize them based on mass. Satellites can be built small to reduce the large economic cost of launch vehicles and the costs associated with construction. Miniature satellites, especially in large numbers, may be more useful than fewer, larger ones for some purposes – for example, gathering of scientific data and radio relay. Technical challenges in the construction of small satellites may include the lack of sufficient power storage or of room for a propulsion system.
PharmaSat Risk Evaluation Satellite nanosatellite, for NASA, was about the size of a loaf of bread, weighed about 4.5 kg (9.9 lb) and was constructed in just six months.
HawkSat-1 was a single-unit CubeSat which was built and is being operated by the Hawk Institute for Space Sciences (HISS), Pocomoke City, Maryland. It is based on a Pumpkin Inc. CubeSat kit, and carries a technology demonstration payload, primarily as a proof of concept mission, testing command, data and power subsystems, as well as solar panels and communications.
CP6, also known as CP6 CubeSat, CalPoly CP-6, PolySat-6 or PolySat CP6 is a single-unit CubeSat which was built and operated by the California Polytechnic State University (CalPoly). It was primarily intended to perform a technology demonstration mission. The main experiment consisted of sensors to determine the spacecraft's attitude. Cameras on the satellite will be used to verify the data returned by the attitude sensors.
DRAGONSat was a 2000s pair of nanosatellites that were to demonstrate autonomous rendezvous and docking (ARD) in low Earth orbit (LEO) for NASA. It was intended to gather flight data with a global positioning system (GPS) receiver strictly designed for space applications to gather flight data in the space environment. ARD is the capability of two independent spacecraft to rendezvous in orbit and dock without crew intervention. The mission failed when the DRAGONSats failed to separate from their carrier spacecraft.
The O/OREOS is a NASA automated CubeSat nanosatellite laboratory approximately the size of a loaf of bread that contains two separate astrobiology experiments on board. Developed by the Small Spacecraft Division at NASA Ames Research Center, the spacecraft was successfully launched as a secondary payload on STP-S26 led by the Space Test Program of the United States Air Force on a Minotaur IV launch vehicle from Kodiak Island, Alaska on 20 November 2010, at 01:25:00 UTC.
Radio Aurora Explorer (RAX) is the first National Science Foundation sponsored CubeSat mission. The RAX mission is a joint effort between SRI International in Menlo Park, California and the University of Michigan in Ann Arbor, Michigan. The chief scientist at SRI International, Dr. Hasan Bahcivan, led his team at SRI to develop the payload while the chief engineer, Dr. James Cutler, led a team of students to develop the satellite bus in the Michigan Exploration Laboratory. There are currently two satellites in the RAX mission.
NanoSail-D2 was a small satellite built by NASA's Marshall Space Flight Center and Ames Research Center to study the deployment of a solar sail in space. It was a three-unit CubeSat, measuring 30 cm × 10 cm × 10 cm with a mass of 4 kg (8.8 lb). Its solar sail had an area of 10 m2 (110 sq ft), and was deployed in around five seconds.
GeneSat-1 is a NASA fully automated, CubeSat spaceflight system that provides life support for bacteria E. Coli K-12. The system was launched into orbit on 16 December 2006, from Wallops Flight Facility. GeneSat-1 began to transmit data on its first pass over the mission's California ground station.
Colorado Student Space Weather Experiment (CSSWE) was the sixth National Science Foundation sponsored CubeSat mission. It was built by students at the University of Colorado at Boulder with advising from professionals at the Laboratory for Atmospheric and Space Physics. The CSSWE mission was a joint effort by the University of Colorado's Department of Aerospace Engineering Sciences and Laboratory for Atmospheric and Space Physics. The mission principal investigator was Prof. Xinlin Li, and the Co-PIs are Prof. Scott Palo and Dr. Shri Kanekal. The project manager for the project was Dr. Lauren Blum, the system engineer was Dr. David Gerhardt, and the instrument scientist was Dr. Quintin Schiller.
PhoneSat is an ongoing NASA project of building nanosatellites using unmodified consumer-grade off-the-shelf smartphones and Arduino platform and launching them into Low Earth Orbit. This project is part of NASA's Small Spacecraft Technology Program and was started in 2009 at NASA Ames Research Center.
BioSentinel is a lowcost CubeSat spacecraft on a astrobiology mission that will use budding yeast to detect, measure, and compare the impact of deep space radiation on DNA repair over long time beyond low Earth orbit.
TRICOM-1R, also known as Tasuki, was a Japanese nanosatellite that was launched during the SS-520-5 sounding rocket test launch on 3 February 2018, with a mission to conduct store and forward data relay and Earth observation using a set of cameras.
CubeSail is a proposed nanosatellite project by the Surrey Space Centre (SSC) in England. The spacecraft is to be a 3U CubeSat propelled by a 25 m²solar sail. The project is financed and technically supported by aerospace manufacturers Astrium and Surrey Satellite Technology. It is designed for operation in low Earth orbit, serving as an atmospheric drag brake to facilitate the removal of satellite debris.
EcAMSat, or E. coli AntiMicrobial Satellite, was NASA's first 6U CubeSat, developed to investigate the effects of microgravity on the antibiotic resistance of E. coli. The spacecraft was launched aboard an Orbital ATK Antares rocket from Wallops Flight Facility on 12 November 2017, and was deployed from the International Space Station on 20 November 2017.
NASA's Pathfinder Technology Demonstrator (PTD) Project is a series of tech demonstrations of technologies aboard a series of nanosatellites known as CubeSats, providing significant enhancements to the performance of these versatile spacecraft. Each of the five planned PTD missions consist of a 6-unit (6U) CubeSat with expandable solar arrays.
Cosmic X-ray Background Nanosatellite-2 was a satellite and mission developed by the Morehead State University to follow up on the CXBN mission launched in 2012. It was an improved version of the previous spacecraft and it increased the precision of measurements of the cosmic X-ray background in the 30-50 keV range and helped to improve understanding of the early universe.
SpaceX CRS-27, also known as SpX-27, was a Commercial Resupply Service mission to the International Space Station (ISS) launched on 15 March 2023. The mission was contracted by NASA and was flown by SpaceX using Cargo Dragon C209. This was the seventh flight for SpaceX under NASA's CRS Phase 2.
