In the past, on Earth, it has largely been to exploit foreign resources and to expand the domestic territory.

The sun and its retinue of planets drift as a group through the vast gulfs of space that separate the stars.

No one can deny the excitement of visiting another world.

In the past, on Earth, it has largely been to exploit foreign resources and to expand the domestic territory.

Above all, I would not expect a wise race, at great expense, to set loose an army of self-replicating robots.

Antimatter is not a source of energy for us, it's a method of storing energy, compact but inefficient.

It would be a pity if, frustrated by the price of travel, we elected to become a society that never made contact, that never gave SETI a fair chance.