RAS_WEB (Page 4,823)

Witnessing the 2017 Total Solar Eclipse Across America Mesmerizes Millions: Photo/Video Gallery Solar corona and prominences during the total solar eclipse across America on Monday, August 21, 2017, as seen from Santee, South Carolina and 4.8 miles from the centerline. Credit: Ken Kremer/kenkremer.com SANTEE, SOUTH CAROLINA – Witnessing ‘Totality’ during Monday’s ‘Great American Solar Eclipse’ was a truly mesmerizing experience far beyond anything I imagined and something I will never forget -That’s a sentiment shared by millions upon millions of fellow gushing spectators. I was stationed in Santee, South Carolina, near Lake Marion and close to the centerline of Totality, along with space journalist friendRead More →

Mars Express Captures Mars’ Moving Bow Shock Every planet in our Solar System interacts with the stream of energetic particles coming from our Sun. Often referred to as “solar wind”, these particles consist mainly of electrons, protons and alpha particles that are constantly making their way towards interstellar space. Where this stream comes into contact with a planet’s magnetosphere or atmosphere, it forms a region around them known as a “bow shock”. These regions form in front of the planet, slowing and diverting solar wind as it moves past – much like how water is diverted around a boat. In the case of Mars, itRead More →

Hallelujah, It’s Raining Diamonds! Just like the Insides of Uranus and Neptune. For more than three decades, the internal structure and evolution of Uranus and Neptune has been a subject of debate among scientists. Given their distance from Earth and the fact that only a few robotic spacecraft have studied them directly, what goes on inside these ice giants is still something of a mystery. In lieu of direct evidence, scientists have relied on models and experiments to replicate the conditions in their interiors. For instance, it has been theorized that within Uranus and Neptune, the extreme pressure conditions squeeze hydrogen and carbon into diamonds,Read More →

Study of Moon Rocks Suggest Interior of the Moon is Really Dry Long before the Apollo missions reached the Moon, Earth’s only satellites has been the focal point of intense interest and research. But thanks to the samples of lunar rock that were returned to Earth by the Apollo astronauts, scientists have been able to conduct numerous studies to learn more about the Moon’s formation and history. A key research goal has been determining how much volatile elements the Moon possesses. Intrinsic to this is determining how much water the Moon possesses, and whether it has a “wet” interior. If the Moon does have abundantRead More →

Tales From Totality: Standing in the Shadow of the Moon A brilliant diamond ring punctuates totality. Image credit and copyright: Shahrin Ahmad. They came, they saw, they battled clouds, traffic and strange charger adapters in a strange land. Yesterday, millions stood in awe as the shadow of the Moon rolled over the contiguous United States for the first time in a century. If you’re like us, your social media feed is now brimming with amazing images of yesterday’s total solar eclipse. Already, we’ve seen some amazing reader images at Universe Today, with more to come. As a special look at a unique event, we’ve collectedRead More →

Incredible Solar Eclipse Images From Our Readers Holy moly, that was awesome! Incredible, fantastic, amazing…there just aren’t the words to describe what it is like to experience totality. While I’m trying to come down to Earth and figure out how to explain how wonderful this was, enjoy the beautiful images captured by our readers from across the US and those from across the world who traveled to capture one of nature’s most spectacular events: a total solar eclipse. The images from those seeing partial eclipses are wonderful, as well, and we’ll keep adding them as they come in (update, we just got some from EuropeRead More →

New Study Says that Martian Weather May Get Snowy Overnight For decades, scientists have tried to crack the mystery of Mars’ weather patterns. While the planet’s atmosphere is much thinner than our own – with less than 1% of the air pressure that exists on Earth at sea level – clouds have been seen periodically in the skies above the surface. In addition, periodic snowfalls has been spotted over the years, mainly in the form of carbon dioxide snow (i.e. dry ice). However, according to a new study by a team of French and American astronomers, Mars experiences snowfalls in the form of water-ice particles.Read More →