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Wait But Why - How (and Why) SpaceX Will Colonize Mars

Wait But Why - How (and Why) SpaceX Will Colonize Mars

The past and the future of space exploration

Education·Launched Nov 2015·0 upvotes·waitbutwhy.com

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ALIVEverified Jul 10, 2026 · HTTP 200

CohortClass of 2015

What it is

The past and the future of space exploration. [Space]

HTTP liveness

9 probes since Jun 16

Jun 16Jul 10

AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)

Observed events

probes · press · GitHub

Jun 16, 2026
First probe — live
Alive · 200 OK

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Tags

consumers students browser extension researchers

Pulse Indexobserved activity

482/4 signal families

Liveness40%

1.00

Press30%

no data

GitHub20%

no data

Tranco10%

0.84

Weighted observed activity · updated Jul 15

Cohort survival · Class of 2015weekly

12,940 products launched in 2015 · 100% still active

12,899 active41 sunset

Still active

100%

Median lifespan

4.9y