(Image credit: NASA/JPL-Caltech) The heliopause is the outer edge of the sun's magnetic influence, known as the heliosphere. At this point, the stream of charged particles emitted by the sun, known as the solar wind, becomes too weak to repel the oncoming stream of radiation from stars...
Astronomy: Roen Kelly, after Credit: NASA/JPL-Caltech Why are we so fascinated with super-Earths? After all, Earth is the only planet we know of with life, so why not focus on finding and studying other small planets? For most of Earth’s 4.5-billion-year history, macroscopic life ...
We collectively call everything that is in this space the "interstellar medium", or ISM for short. The composition of the ISM is broken down by the scientists at the Infrared Processing and Analysis Center (IPAC) at Caltech: the ISM is mostly composed of atoms of hydrogen (~90%) and ...
The image is an excerpt from an observation from NASA’s Mars Reconnaissance Orbiter showing a meteorite impact that excavated this crater on Mars exposed bright ice that had been hidden just beneath the surface at this location. Credit: NASA/JPL-Caltech/University of Arizona But knowing whether ...
Archaeological evidence shows that bone skates (skates made of animal bones) are the oldest human powered means of transport, dating back to 3000 BC. Why people started skating on ice and where is not as clear, since ancient remains were found in several locations spread across Central and Nor...