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What terms originating in space exploration have been absorbed into non-technical English usage?
Published: September 29, 2025 21:44
Older technologies have contributed to everyday English. The square rigger traditions of the Royal Navy have given us such expressions as Leeway Bye and large Loose cannon Taken aback Slush fund Above board Bitter end Similarly, many railroad terms are…
What terms from space exploration have been absorbed into non-technical English usage?
Published: September 29, 2025 19:15
Older technologies have contributed to everyday English. The square rigger traditions of the Royal Navy have given us such expressions as Leeway Bye and large Loose cannon Taken aback Slush fund Above board Bitter end Similarly, many railroad terms are…
Is it a good idea to use a quadruped robot on the next Mars exploration mission?
Published: September 29, 2025 15:51
Quadruped robot technology is becoming increasingly mature, with commercial models demonstrating non-trivial off-road mobility that allows them to traverse complex and extreme terrains with ease. Compared to wheeled vehicles, these legged machines are less…
How did Stardust and LUCY save Delta-V
https://space.stackexchange.com/questions/69943/how-did-stardust-and-lucy-save-delta-v
Published: September 29, 2025 08:26
Many spacecrafts (e.g. Stardust, LUCY) starting from Earth have performed the following maneuver I call self assist: get into an eccentric sun orbit near aphelion/perihelion do a deep-space maneuver (dsm) and reduce/increase speed slightly after exactly 1…
How did JUNO, Stardust, LUCY save Delta-V
https://space.stackexchange.com/questions/69943/how-did-juno-stardust-lucy-save-delta-v
Published: September 27, 2025 08:58
Many spacecrafts (e.g. JUNO, Stardust, LUCY) starting from Earth have performed the following maneuver I call self assist: get into an eccentric sun orbit near aphelion/perihelion do a deep-space maneuver (dsm) and reduce/increase speed slightly after…
How to calculate the optimal altitude for an orbital propellant depot
Published: September 26, 2025 21:44
In the current Artemis program, the Starship Human Landing System (HLS) plan calls for the HLS Starship vehicle to be refilled in LEO from an orbiting propellant depot. If the depot orbits lower, it will consume more propellant to reboost its orbit. If it…
Why is the RTEMS Real-Time Operating System often used in European space industry?
Published: September 26, 2025 12:30
I was wondering recently about RTEMS. Why is this Real-Time Operating System (RTOS) widely use in the European space industry among other suitable alternatives like freeRTOS or VxWorks? Is this RTOS certified like SafeRTOS for instance?
Starlink CONSTELLATION cycle time? Not the orbit time for a specific sat but the time to be over the same spot twice
Published: September 25, 2025 05:38
STARLINK constellation, how many hours for the constellation to cycle? IOWs if a sat is overhead this instant how long till that same sat is over this same spot. The time for the constellation to cycle around the planet... guessing it should be about three…
For an electric pump rocket engine like the Rutherford engine, is it possible to place the main valve upstream of the pump?
Published: September 25, 2025 01:55
For electric pump rocket engines like the Rutherford engine, the propellant flow/pressure can be easily controlled by the motor, and the main valve can only play a switching role. So is it possible to put the valve upstream of the pump, so that the…
Maximum Delta-V savings doing multiple 'self-assists'
https://space.stackexchange.com/questions/69943/maximum-delta-v-savings-doing-multiple-self-assists
Published: September 22, 2025 19:24
Many spacecrafts (e.g. JUNO, bepicolombo) starting from Earth have performed the following maneuver I call self assist: get into an eccentric sun orbit near aphelion/perihelion do a deep-space maneuver (dsm) and reduce/increase speed use Earth for a flyby…
Am I correct in saying we are close to the point where transport will no longer be the largest technological hurdle in space colonisation?
Published: September 22, 2025 12:59
In recent years, the costs of launch into Earth orbit and other space transportation costs have fallen significantly, some would even say dramatically. If the end goal is a self-sustaining colony beyond Earth, this is a very good thing, but it should also…
How do you calculate the required Delta V for low thrust interplanetary electric propulsion?
Published: September 21, 2025 07:48
This is a follow up to a question I apparently asked years ago and forgot about. At the time I was trying to calculate thrust for interplanetary electric propulsion and the person who answered pointed out that Hohmann orbits require all the propulsion to…
Can solar power be made practical in the main Asteroid Belt?
Published: September 21, 2025 06:13
If asteroid mining and/or rotating habitat colonisation are ever to be made practical, there will have to be a good source of energy in the main Asteroid Belt (the one between Mars and Jupiter); in the near-term, imports of nuclear material from Earth can…
How do you calculate the percentage of light-speed a ship with a certain delta-v can achieve, accounting for relativistic effects?
Published: September 21, 2025 03:21
I was doing some back-of-a-postage-stamp calculations on high-isp interstellar spacecraft earlier and realised something. If I design a spaceship which according to the rocket equation has a very high Delta-V, close or even beyond the speed of light (in my…
Could our telescopes detect a type I civilisation
https://space.stackexchange.com/questions/69935/could-our-telescopes-detect-a-type-i-civilisation
Published: September 21, 2025 00:02
Our telescopes have detected planets similar to Earth. I was wondering if there was life on those planets and they were scientifically just as advanced as we, could we detect their satellites orbiting their planet(or objects the size of a satellite/space…