Deep space and relay
Every bit, the long way home.
Find the launch window on a porkchop, park at a Lagrange point, relay from the lunar far side or a Mars rover, and route bundles across contacts that open minutes or hours apart. One engine, from low Earth orbit to the outer planets.
01Out here
Past the Moon, the network is a schedule, the link budget is a whisper and every answer arrives minutes late.
- 9.18km²/s², minimum Earth to Mars C3 in the 2026 window, departing about 1 November 2026Mars window
- 326,381km from Earth to Earth–Moon L1, 0.849 of the lunar distanceEarth–Moon system
- 1.51 Mkm beyond the Earth–Moon barycentre to Sun–Earth L2, 0.01008 AUEarth–Moon system
- 3–22minutes of one-way light time between Earth and MarsLight time
Pick the launch day off a porkchop.
Read the launch day, the energy and the flight time straight off the contours.
- Minimum here
- Computing…
- Departure
- —
- Time of flight
- —
- Engine reference
- 9.18 km²/s², about 1 Nov 2026
Five places to stand still.
Find L1 to L5 for any pair of bodies, at any epoch.
- Mass ratio μ
- —
- L1
- —
- L2
- —
- L4 and L5
- —
FIG 03Light time and conjunction
Mars answers when it can.
See when Mars answers, and when the Sun blocks the link, through 2030.
- Ground antennas built in
- Solar conjunction outages marked
- Light time on the true geometry
Validated: planet positions against JPL reference ephemerides →
02Relays
From another world, in two hops.
Follow the data from a rover or the lunar surface home, and read the latency end to end.
End to end
- End-to-end latency
- —
- Of which light time
- —
Illustrative rates. We run your own links in a briefing.
FIG 04Store and forward
Store it, carry it, forward it.
Watch a 100 MB bundle wait for each contact and ride it home across one Mars sol.
Validated: Earth–Moon light time against the reference ephemeris →
Hand it to your network.
The results for the whole chain export as CSV for the systems you run.
- Store-and-forward
- Scheduled contacts
- Age of information
03Checked against published references
Numbers you can defend.
The solar-system and networking checks run on every change, against published references. Every validation result.
- Textbooktransfer examples reproduced from published referencesTransfers
- 16.4km²/s², the launch energy the Mars Reconnaissance Orbiter flew on 12 August 2005, reproducedPorkchop
- J2000Earth and Mars against JPL reference ephemeridesPlanet positions
- 1,282ms Earth–Moon light time, checked against the reference ephemerisNetworks
More seats, more compute and shared workspaces come with Team and above. Plans and pricing.
04Questions
Asked by deep-space teams.
Start from ready-made windows for the planets, or set your own departure and arrival.
Yes. Lunar and Mars relays join the same network study as your Earth-orbit fleet.
Bring your hardest question. We show it on your mission in a briefing.
Under NDA, with the founder who builds Arksa.
Request a briefing05More solutions
More solutions
- Imaging
Earth observation
Sun-synchronous design, revisit over your areas, imaging opportunities and downlink.
- Networks
Broadband constellations
Walker shells, crosslinks, latency against fibre and conjunctions at scale.
- Teaching
Universities
Teaching and research missions, from a first orbit to a Mars transfer.
Early access · Mission and Sovereign by contract
Start the long way home
Interplanetary design and relay networks are on Pro. Move to Mission for a whole programme, and to Sovereign when it must stay on your own servers.