Spaceflight
Science · 79 members
Launch windows, delta-v and landings.
About this space
Launch windows, delta-v budgets, landings, and the economics of getting mass to orbit. Mission design read closely, launch threads for people who still set alarms, and the history that explains why vehicles look the way they do. Enthusiasm is fine; made-up numbers are not.
Topics
- Missions
- Orbital mechanics
- Launch threads
- History
Recent discussions
- Why rocket engine test stands look the way they do, a short historyHistory · Oct 25, 2026 · 9 replies
- How do you explain Mars launch windows to eleven-year-olds without any equations?Question · Orbital mechanics · Oct 25, 2026 · 4 replies
- Why radio astronomers care about satellite constellations, explained without blameMissions · Oct 24, 2026 · 6 replies
- For small satellite teams: what border and shipping paperwork caught you by surprise?Question · Missions · Oct 24, 2026 · 8 replies
- Explaining a booster's boostback burn to high schoolers: is my analogy wrong?Question · Orbital mechanics · Oct 24, 2026 · 8 replies
- Why a satellite speeds up when atmospheric drag slows it downOrbital mechanics · Oct 24, 2026 · 7 replies
- Why plan a dedicated exoplanet atmosphere mission when the big telescopes already do it?Question · Missions · Oct 24, 2026 · 8 replies
- Missions: an unpopular opinion, argued properlyMissions · Oct 3, 2026 · 6 replies
- History: the advice I had to unlearnHistory · Oct 3, 2026 · 7 replies
- Why is a Hohmann transfer not always the cheapest option?Question · Orbital mechanics · Sep 29, 2026 · 8 replies
- Reuse changed mission design more than it changed launch costMissions · Sep 24, 2026 · 12 replies
- A plain-language guide to reading a launch licenceHistory · Sep 13, 2026 · 8 replies
- Launch threads: a small thing I am quietly pleased withLaunch threads · Sep 6, 2026 · 4 replies
- Orbital mechanics: how do you keep going past the interesting part?Question · Orbital mechanics · Sep 2, 2026 · 2 replies
- History: where would you tell a beginner to start?Question · History · Aug 21, 2026 · 2 replies
- Orbital mechanics: what has actually changed in the last year?Orbital mechanics · Aug 18, 2026 · 3 replies
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