Members Can Post Anonymously On This Site
By European Space Agency
Video: 00:03:29 Mission complete. ESA’s second European Remote Sensing (ERS-2) satellite has reentered Earth’s atmosphere over the North Pacific Ocean. The satellite returned at 18:17 CET (17:17 UTC) between Alaska and Hawaii.
ERS-2 was launched almost 30 years ago, on 21 April 1995. Together with ERS-1, it provided invaluable long-term data on Earth’s land surfaces, ocean temperatures, ozone layer and polar ice extent that revolutionised our understanding of the Earth system.
ERS-2’s reentry was ‘natural’. ESA used the last of its fuel, emptied its batteries and lowered the satellite from its altitude of 785 km to 573 km. This reduced the risk of collision with other satellites and space debris. As a result, it was not possible to control ERS-2 at any point during its reentry and the only force driving its descent was unpredictable atmospheric drag.
As well as leaving a remarkable legacy of data that still continue to advance science, this outstanding mission set the stage for many of today’s satellites and ESA’s position at the forefront of Earth observation.
The ERS-2 reentry is part of ESA's wider efforts to ensure the long-term sustainability of space activities. These include ESA's Clean Space initiative which promotes the development of new technologies for more sustainable space missions in collaboration with the wider European space community, as well as the Zero Debris Approach, which will even further reduce the debris left in both Earth and lunar orbits by future missions.
View the full article
By Amazing Space
LIVE Intuitive Machines-1 Lunar Landing - NASA broadcast
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
A computer generated image of objects in Earth orbit that are currently being tracked. Credits: NASA ODPO NASA’s Office of Technology, Policy & Strategy is soliciting research and analysis related to the social, economic and policy aspects of space sustainability. This topic area is further refined into two separate elements: orbital space sustainability and lunar surface sustainability. OTPS will provide up to $300K (orbital) and $200K (lunar surface) for between 1-3 proposals in each element. Key questions are featured below.
Orbital Space Sustainability: Economic, Social and Policy Research and Analyses
Proposals should be responsive to one of the following questions:
What are current policy, regulatory or legal gaps to improve space sustainability in various orbital regimes (LEO, MEO, GEO, Cislunar, and/or Lunar) and what specific measures should be taken to address them? Proposers may address one or several orbital regimes. Considering various scenarios for the space environment in the 2040 timeframe, what policies, regulations or other support are forecasted to be needed? Research should take into consideration that potential policies for space sustainability may be incentivized or rendered unnecessary by advancements in technological capabilities and differing assumptions about the future operational environment; therefore, the research should assess the robustness of various policy proposals under realistic assumptions. What are the costs to spacecraft operators from interacting with debris in GEO and Cislunar space? What are the benefits of potential risk-reducing actions? How effective are various policy tools and mechanisms (for example, performance bonds, incentives to improve PMD compliance/fees for bad behavior, global minimum tax, and environmental liability insurance)? How might such interventions impact the business of satellite owners and operators or government owners and operators? Lunar Surface Sustainability: Economic, Social and Policy Research and Analyses
The sustainable development of the lunar surface acknowledges that current operations may impact our ability to conduct future operations (indeed current operations may also impact other current operations. Whether we seek to protect critical areas for scientific investigation (e.g., Permanently Shadowed Regions), preserve lunar heritage areas (e.g., Apollo sites) or incorporate other technical, economic, or cultural considerations may all factor into our mission planning, policy and potential regulatory approaches. Analyses may help disentangle and characterize the goals of sustainability, develop frameworks for evaluating the sustainability of operations, or compare and contrast the different definitions of sustainability. Proposals should consider both human and robotic missions.
All proposals must be submitted to one of the ROSES calls (F.21 or F.17) by May 17, 2024. Proposers can submit different proposals to each element. However, duplicate proposals submitted to both elements will only be considered for a single element (NASA will make most appropriate determination).
To submit proposals, visit:
Lunar Surface Sustainability
Last Updated Feb 15, 2024 EditorBill Keeter Related Terms
General View the full article
Join the next Do NASA Science LIVE event as we explore ways to participate in NASA’s winter-themed volunteer research projects. Register here for this event on February 21st at 7pm ET. Credit: SciStarter Snow and ice are everywhere this time of year—mountain tops, Alaska, and even outer space. Grab a cup of hot cocoa and join us for the next Do NASA Science LIVE event as we explore ways to participate in NASA’s winter-themed volunteer research projects. On this interactive Zoom call, you’ll chat with five scientists who will describe how you can participate in their NASA research. No previous experience is required—just access to a computer or smartphone. Registration is free, required, and now open.
Discover how to fill important data gaps in understanding what “cold” means on Earth AND in space. Sometimes cold is relative and the coldest objects in space—still warmer than Jupiter– are vital for teaching us about how stars and planets form. Help us understand and protect our own planet too! We will hear from the researchers behind: Mountain Rain or Snow, Fresh Eyes on Ice, Backyard Worlds: Cool Neighbors, GLOBE Observer Land Cover, and the Sungrazer Project.
Register here to join in the conversation, connect with scientists, and contribute to real science: February 21st at 7pm ET for “What’s it mean to be cool?”. Bring the whole family! Everyone is welcome.
Last Updated Feb 12, 2024 Related Terms
Astrophysics Biological & Physical Sciences Citizen Science Earth Science Heliophysics Planetary Science Explore More
4 min read Sense the Solar Eclipse with NASA’s Eclipse Soundscapes Project
22 mins ago
2 min read Hubble Spots a Galaxy Shrouded by Stars
3 days ago
3 min read NASA’s Hubble Traces ‘String of Pearls’ Star Clusters in Galaxy Collisions
4 days ago
View the full article
Check out these Videos