Inaugural mission: NEOshare

Scientists have identified over 20,000 near Earth objects (NEOs); nearly 2,000 have potential implications for Earth. Yet only a handful have been studied closely enough to yield information about their geology, chemistry and internal structure and to truly assess their properties as potentially hazardous objects that could impact the Earth.

The NEOshare mission will launch a cluster of CubeSat/SmallSat-class spacecraft to perform a close flyby of a diverse set of near-Earth asteroids. Each spacecraft will fly by a different target body, with the possibility of encountering up to 10 different asteroids in total.

NEOs identified
nearly 2000
with potential implications for Earth
only 5
visited by space missions


  • Launch in 2023, reaching first asteroid a few months later.
  • Full mission operations lasting 3 to 5 years.

NEOshare scientific return

Diverse sample set

Almost all launch opportunities have the potential to encounter more than 100 near-Earth asteroids and 20 near-Earth comets for up-close study.


We will characterize in detail the surface geology, mineralogy, ice-volatile-organic inventory, density and other properties.


We are seeking members interested in contributing to science analysis, instrumentation such as imagers and spectrometers, and small spacecraft systems like propulsion and computing.

We welcome your ideas!

IP and data rights (based on the Hubble model)

  • Spacecraft and component designs are proprietary to provider and institute, if desired.
  • Design information is never released to the public without member agreement.
  • Science data is shared among all MILO members immediately and embargoed from public release for a year.

    NEOshare mission plan

    • 01 Launch
      Dedicated launch. /Cluster of spacecraft attached to a dispenser (ESPA Ring).
    • 02 Encounter
      Launch trajectory inserts dispenser to heliocentric orbit. /CubeSats/SmallSats may continue in orbit awaiting target of opportunity.

    NEOshare mission plan

    • 03 Deployment
      CubeSat/SmallSat serially dispensed on separate flyby trajectories, with some propulsive capabilities
      Each CubeSat/SmallSat independently communicates to specific ground stations
    • 04 Encounter
      CubeSat/SmallSat performs NEO characterization, and relays data back
      One or more of the deployed CubeSats/ Smallsats will encounter multiple NEOs