When the communication dish locked on it detected low emissions in several electromagnetic bands.

Meanwhile, however, radio astronomers have been detecting emissions from a comparable diversity of organic compounds in clouds of gas between distant stars.

The current generation sensor can only detect and track pulsed emissions, due to the requirement to measure the time of arrival of pulses.

The sensor detected emissions characteristic of drifting ice as well as of land and open water.

This coincides with the estimated locus of the second Fafnir, and the previously detected heavy gravitic emissions have ceased.

Clearly they had detected temporal emissions from the Guardian.

Radio astronomers use the spectrum passively, detecting emissions from deep space that can occur at virtually any frequency.

In addition, radio astronomers are experimenting with a method to help detect cosmic emissions even if other services are transmitting in the same band.

The internal electronics were particularly good, especially the sensors designed to detect emissions from ships and aircraft.

Launched in 1983, the space telescope IRAS detected infrared emissions from stars near to the Sun.