I can never look now at the Milky Way without wondering from which of those banked clouds of stars the emissaries are coming. If you will pardon so commonplace a simile, we have set off the fire alarm and have nothing to do but to wait. I do not think we will have to wait for long

If we have learned one thing from the history of invention and discovery, it is that, in the long run - and often in the short one - the most daring prophecies…

It is not easy to see how the more extreme forms of nationalism can long survive when men have seen the Earth in its true perspective as a single small globe a…

We stand now at the turning point between two eras. Behind us is a past to which we can never return ... The coming of the rocket brought to an end a million y…

Where are they?

Perhaps the safest thing to do at the outset, if technology permits, is to send music. This language may be the best we have for explaining what we are like to…

I am not from your world or this one; I was born on the Sun. Sometimes our world becomes overcrowded because our people live so long. Our people are almost fre…