Ozone is a highly reactive gas that can be broadly divided into two categories—“good” and “bad.” Good ozone is found in the stratosphere and shields the Earth from harmful levels of ultraviolet radiation; bad ozone is created near the ground level from various natural and human sources, and can have detrimental effects on human health and the environment.
Cameras on NASA spacecraft have treated us to intriguing and inspiring perspectives of our home planet as they've looked back at Earth from various locales.
NASA has selected two finalist concepts for a robotic mission planned to launch in the mid-2020s: a comet sample return mission and a drone-like rotorcraft that would explore potential landing sites on Saturn’s largest moon, Titan.
An innovative interpretation of X-ray data from a cluster of galaxies could help scientists fulfill a quest they have been on for decades: determining the nature of dark matter.
Researchers are developing new types of magnetometers for use on future small satellites that not only fulfill stringent requirements for low-amplitude and high-precision measurements, they are also enabling the team to develop a new approach to achieving highquality magnetic measurements from space, without the need for a boom.
Are microwaves really just a form of light? What exactly is the electromagnetic spectrum? While our eyes can't see most of this spectrum, except for visible light, we have developed technologies such as giant radio dishes, infrared cameras, x-ray scanners, and utraviolet satellites to peak into the "invisible" world around us.
Did you know the Moon is slowly moving away from Earth and that the Moon has water? Jim Green is joined by lunar expert Sarah Noble to discuss how the Moon was formed, lava tubes and moonquakes, the “dark side of the Moon,” and mysteries we have yet to solve about Earth’s nearest neighbor.