Their own ship was coming out of the night umbra now.

Vampires, in general, know little or nothing about the Umbra.

At the same time, parts of the Umbra have withdrawn into themselves, and can no longer be found.

It cast an umbra upon the papers which the old man held.

It hung inside the umbra, three kilometers from the surface.

We might be able to force them beyond the umbra and too far out of range to harm us."

They were in the darkness of the umbra now.

For a point source only the umbra is cast.

Students study works in depth, and produce a literary magazine each year, Umbra.

The umbra, a region of burning gas a hundred thousand miles or so across, moved.

The umbra from the hat brim vanished in the light.

A few seconds later the Challenger was speeding toward the moon's umbra.

The core of Earth's shadow is called the umbra.

But at this moment, detached as he was from his own umbra, he could not check.

They are entirely unaware of the more traditional Umbra.

The Moon is at its closest to the center of the Earth's umbra.

Very dark central shadow, while outer edge of umbra is relatively bright.

They were heading toward the darkened umbra from which the Challenger had just emerged.

Only his umbra had survived the process; it would take time to develop a new penumbra.

If Umbra doesn't produce furniture for them, others will.

For a non-point source of light, the shadow is divided into the umbra.

An observer in the umbra experiences a total eclipse.

Within the umbra, there is no direct solar radiation.

Umbra: A species of floating spheres with a hard, black carapace.

When the class began, about twenty students were seated on the grass in the umbra of several date palms.