“Before the mid-90’s, when the first secure case of an exoplanet, 51 Peg was discovered orbiting around a star like our own, planets beyond our own solar system were thought to be out of the reach of humans. The idea that we could detect worlds beyond our own or even that worlds beyond on our own might be there was questioned,” says astrophysicist and dailygalaxy.com editor and science advisor, Jackie Faherty. “But once the first few worlds were found, the floodgates were opened and the zoo of exoplanets started to reveal itself.”
Your free twice-weekly fix of stories of space and science –a random journey from Planet Earth through the Cosmos– that has the capacity to provide clues to our existence and add a much needed cosmic perspective in our Anthropocene epoch.
Supernova explosions release as much energy in a second as our Sun will in its entire 10-billion year existence. Without supernovae, “there would be no computer chips, trilobites, Mozart or the tears of a little girl,” wrote science writer Clifford A. Pickover.
Scientists using new and archival data from NASA’s Hubble Space Telescope have uncovered for the first time evidence of water vapor in the atmosphere of the largest moon in our solar system, Jupiter’s icy moon Ganymede, which contains more water than all of Earth’s oceans. Water vapor forms when ice from the moon’s surface sublimates—that is, undergoes a phase change from a solid to gas. Ganymede is one of three icy Galilean moons, including Europa and Callisto, that are thought to contain liquid water oceans and potential life-bearing habitats beneath their surface. Jupiter’s gravity stretches and squeezes these moons as they orbit the gas giant, heating their interiors through friction.
Contrary to science-fiction icon Arthur C. Clarke’s admonition never to attempt a landing on Jupiter’s moon, Europa, NASA announced on Friday that it had selected SpaceX to launch a planned voyage to the icy moon,with its 120-mile high plumes erupting from a global ocean that lies 15 miles below a chaotic, churning surface.
The Galaxy Report newsletter brings you twice-weekly news of space and science that has the capacity to provide clues to the mystery of our existence and add a much needed cosmic perspective in our current Anthropocene Epoch.
