Depending on the orbital position of Mars and the delta-V you're willing to invest, anything from a year to 5 - an unmanned probe can perform a complex chain of gravitational slingshots to make do without huge (and expensive rockets) whereas humans have to wait for convenient launch windows, which are decades apart.
| Attributes | Values |
|---|---|
| rdfs:label |
|
| rdfs:comment |
|
| dcterms:subject | |
| abstract |
|