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#spacenavigation

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From Earth to #Mars lasts about 200 days. To safely go from those speeds down to zero in that short amount of time requires “slamming on the brakes”. Successful #aerobraking depends upon precise navigation, knowledge of weather, and a solid understanding of the forces the craft can withstand. science.nasa.gov/planetary-sci

NASA Science · Mars Mission TimelineBy lmclaurin
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#Athena came to rest inside a crater, 250m from its intended target. “With the direction of the sun, the orientation of the #solar panels, and extreme cold temperatures in the crater, #IntuitiveMachines does not expect Athena to recharge 🔋”. Issues with Athena’s laser altimeter may have contributed to the bad landing straitstimes.com/world/united-

The Straits Times · US company says moon mission over after another sideways landingIt comes just days after Texas rival Firefly Aerospace successfully landed its Blue Ghost lander on its first attempt. Read more at straitstimes.com.

Challenges of #SpaceNavigation : If #Earth were the size of a softball, the #ISS would be orbiting just above the seams, the #Moon would be a #marble about 2 meters away, and #Mars would be 1.2 to 2.4 kilometers away. The targets are small and moving. timeandnavigation.si.edu/navig

Chris Potts compared the target requirements of #landing the #Spirit rover inside a specific #crater on Mars 🔴 to being able to shoot a #basketball 🏀 through a hoop 9000 miles away.
Since there’s no #GPS in outer space, navigators process the radiometric tracking data received from the #DeepSpaceNetwork (#DSN) to determine the #spacecraft’s #position and velocity. They also use optical data, where the spacecraft takes a picture of the star background to help refine the spacecraft’s trajectory universetoday.com/37934/the-na

When a #spacecraft is launched from #Earth 🌍, its forward #velocity combined with the gravitational pull of Earth cause it to travel in a curved path. As the spacecraft heads toward another #planet 🪐, the #gravitational pull of that planet factors in to the path the spacecraft takes. jpl.nasa.gov/edu/teach/activit

The spacecraft departs #Earth 🌍 at a #speed of about 39,600 kph. The trip to #Mars will take about seven months and about 480 million kilometers mars.nasa.gov/mars2020/timelin

Direct-to-#GEO (35,786 km) launches are exceptionally challenging for the #rocket. The upper stage must survive a roughly five-hour 🕔 coast to that apogee. During that coast, the rocket 🚀 must survive passes through both of #Earth’s harsh #radiation belts and maintain perfect control of its orientation and tank #pressures to keep its refined kerosene fuel from #freezing, its cryogenic liquid oxygen (LOx) from #boiling away, and itself from #bursting 💥 as its propellant warms and expands. teslarati.com/spacex-falcon-he

What #ispace wants to achieve with the first #private #lunar #rover #landing
▶️ Completion of all #deepspace orbital control #maneuvers before LOI (Lunar #Orbit Insertion)
▶️ Reaching the lunar gravitational field/lunar orbit
▶️ Completion of all orbit control maneuvers in lunar orbit
▶️ Completion of the lunar landing
▶️ Establishment of a steady system state after the lunar landing
nasaspaceflight.com/2022/12/ha
#SpaceNavigation #SpaceCompany #PrivateSpaceflight #Hakuto #JAXA #Moon #Lander #NASA #LunarFlashlight #Water #UAE #Emirates #Rashid

NASASpaceFlight.comSpaceX launches Falcon 9 carrying private Japanese moon lander - NASASpaceFlight.comSpaceX has used its Falcon 9 rocket to send a privately funded mission toward the…