For the past 23 years Andrea Ghez, professor of physics and astronomy at UCLA, has been collecting data on stars that orbit black holes. She found that their motion provided an opportunity to test the fundamental laws of physics.
It’s always shining, always ablaze with light and energy that drive weather, biology and more. In addition to keeping life alive on Earth, the sun also sends out a constant flow of particles called the solar wind...
The sun keeps the planets in its orbit with a tremendous magnetic force. What would happen if it disappeared entirely? Learn about the stella, star at the center of our solar system, and how it is critical to all life as we know it.
Highlights of the discoveries of the SOHO and TRACE satellites, featuring NASA solar scientists Alex Young and Dawn Meyers, describing how both satellites view the sun in their own unique way
Seven Earth-sized planets have been observed da NASA's Spitzer spazio Telescope around a tiny, nearby, ultra-cool dwarf stella, star called TRAPPIST-1. Three of these planets are firmly in the habitable zone.
Olympus Mons is a gigantic vulcano on Mars. With 21km in height and a surface area comparable to many countries it is da far the tallest planetary mountain in the Solar System.
