Aging Mars Orbiter Fleet Faces Gap After Maven Loss, NASA Turns to Blue Origin

Since 2021, eight orbiters from NASA, ESA, ISRO, UAE Space Agency, and CNSA have studied Mars, but the loss of the Maven spacecraft in December 2025 reduced the active count to seven and left NASA with only two operational assets. Maven, launched in 2014, ceased communications after emerging from behind the planet, marking only the second such loss for NASA in the 21st century. The remaining fleet, led by the 25-year-old 2001 Mars Odyssey and the 23-year-old Mars Express, underpins both scientific observations and the radio links that transmit data from rovers like Perseverance.

To fill the looming communications gap, NASA awarded Blue Origin a contract in September 2026 to build a Mars telecommunication satellite, with delivery required by Dec. 31, 2028. Mars-Earth launch windows open roughly every two years, so missing the 2028 slot would push the next opportunity to 2030 or 2031. While the Blue Origin satellite’s scientific payload remains unspecified, the aging orbiters are gradually losing instrument capability, underscoring the urgency of securing a reliable relay for future exploration.