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11 comments
35 forecasters

When will the first O'Neill cylinder variant be completed?

Current estimate
2095
83 comments
114 forecasters

When will the following vehicles launch into orbit?

00
6 comments
15 forecasters

Railguns used in warfare before 2035?

50%chance
6 comments
8 forecasters

When will an Adaptive Cycle Jet Engine be successfully used in the launch of a rocket to an altitude of at least 160 kilometers?

Current estimate
Jul 2034
5 comments
7 forecasters

How much total space based solar PV (in GW) will be installed by the following years?

2 comments
27 forecasters

What will be the proportion of orbital launches in 2030 for the following launcher categories?

1 comment
25 forecasters

What propulsion mechanism will launch a payload into space at a cost of < $100/kg first?

Conventional90.2%
Air-breathing2.1%
Thermal rockets1.2%
23 comments
64 forecasters

Will SpinLaunch lift a satellite to low Earth orbit by 2032?

4%chance
7 comments
32 forecasters

When will a fusion reactor reach the following energy gain (Q) milestones?

00
11 comments
72 forecasters

When will nuclear power be used for propulsion in space in a non-test capacity?

Current estimate
Dec 2033