The United States and Russia plan unmanned missions that can probe far beneath the "cold, arid surface."

One could not fancy a drop of moisture upon that arid surface.

It was perpetual starlight on the arid surface of dead planets.

The air was crackling with the power of life, life reclaiming the arid surface.

All around the arid surface were rocks that scientists suspected once held an ancient lake.

Compared to the arid surface of the planet, the caves were very chilly.

The genera were unfamiliar to Daniel; certainly they weren't native to Sexburga's arid surface today.

At the entrance-sphincter of the balloon, a single high-velocity Hill transport had landed on the arid surface.

Scientists who study the present-day surface of Mars, arid and frigid, have long wondered, where did all the water go?

Looking down, he saw a long stalk, well adorned with the fatal tendrils, groping its way over the arid and unsatisfactory surface.