Engineering:Hellenic Space Dawn

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Hellenic Space Dawn
OperatorGreece EMTech Space, Hellenic Space Center, 23px European Space Agency
COSPAR IDHELIOS: 2026-100E
SELENE: 2026-100B
Websitehttps://hsd.emtech.global
Spacecraft properties
Spacecraft type2x 8U CubeSat
Start of mission
Launch date3 May 2026, 7:00 UTC
RocketFalcon 9 (CAS500-2 mission)
Launch siteSLC-4E
ContractorSpaceX
Greek CubeSat In-Orbit Validation
← PeakSat
 

Hellenic Space Dawn (HSD) is a Greek space mission aiming to demonstrate communication technologies and on-board data processing for Earth observation applications.[1][2][3][4] The mission consist of two 8U CubeSat-type small satellites (Helios and Selene) equipped with laser communication terminals.[3] HSD was launched on 3 May 2026.[2][5][6][7][8][9][10]

Background

The mission was developed by the Greek group of companies EMTech Space with the support of the EU's and ESA's Greek CubeSat In-Orbit Validation programme.[2] The two spacecraft are based on the CubeSat bus developed by the Bulgarian company EnduroSat.[11] The mission's laser terminals were built by AAC Clyde Space.[12] The mission uses the EASE-Rise ground mission control solution by Telespazio Germany.[13]

See also

  • List of European Space Agency programmes and missions

References

  1. ↑ Kulu, Erik. "Hellenic Space Dawn" (in en). https://www.nanosats.eu/sat/hellenic-space-dawn.html. 
  2. ↑ 2.0 2.1 2.2 "Seven missions launched to test optimised data transfer from space" (in en). https://www.esa.int/Applications/Connectivity_and_Secure_Communications/Seven_missions_launched_to_test_optimised_data_transfer_from_space. 
  3. ↑ 3.0 3.1 "Greek CubeSats ready for assembly" (in en). https://www.esa.int/Applications/Connectivity_and_Secure_Communications/Greek_CubeSats_ready_for_assembly. 
  4. ↑ "HELLENIC SPACE DAWN" (in en-US). https://geosystems-hellas.gr/hellenic-space-dawn/. 
  5. ↑ "CAS500-2 Mission" (in en). https://www.spacex.com/launches/cas500-2. 
  6. ↑ "CAS500-2 & Others | Falcon 9 Block 5 | Next Spaceflight" (in en). https://nextspaceflight.com/launches/details/8213/. 
  7. ↑ tovima.com (2026-05-03). "Greece Launches First Thermal Satellites to Boost Fire Detection and Climate Monitoring" (in el). https://www.tovima.com/science/greece-launches-first-thermal-satellites-to-boost-fire-detection-and-climate-monitoring/. 
  8. ↑ Day, Eleanor (2026-05-03). "SpaceX launches CAS500-2 and 45 other payloads to Sun-synchronous orbit" (in en-US). https://www.nasaspaceflight.com/2026/05/spacex-launch-cas500-2-45-payloads-orbit/. 
  9. ↑ "Launch boosts European Earth monitoring and connectivity" (in en). https://www.esa.int/Applications/Observing_the_Earth/Launch_boosts_European_Earth_monitoring_and_connectivity. 
  10. ↑ Maták, Juraj. "Družice". http://www.kozmo-data.sk/druzice/detail/2026-100/. 
  11. ↑ "Hellenic Space Dawn Mission Adopts ENDUROSAT CubeSat-Bus" (in en-US). https://emtech.space/. 
  12. ↑ "AAC Clyde Space delivers its first laser communication terminals | AAC Clyde Space" (in en-GB). 2025-07-14. https://www.aac-clyde.space/articles/aac-clyde-space-delivers-its-first-laser-communication-terminals. 
  13. ↑ "Hellenic Space Dawn Mission Adopts Telespazio’s EASE-Rise Mission Control Solution" (in en-US). https://www.telespazio.de/en/news-and-stories-detail/-/detail/hellenic-space-dawn-mission-adopts-telespazio-s-ease-rise-mission-control-solution. 

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