NASACast 13 Mar 2018, 13:07 UTC NASA EDGE talks with Dr. Jamese Sims about how scientists at the National Oceanic and Atmospheric Administration (NOAA) are evaluating data and developing specific products to serve the meteorological community. GOES-S, (GOES 17 when operational with GOES 16) will provide the most comprehensive look at weather data from the West Coast of Africa to New Zealand, and as a result, more and more applications of weather data can now be generated.
StarDate Online 13 Mar 2018, 05:00 UTC Leo, the lion, springs across the sky on March nights. He’s in the east at nightfall, marked by his prominent “heart,” the bright star Regulus, which is a third of the way up the sky. If you scan the sky below and to the left of Leo with a telescope, you’ll see clusters of galaxies. They contain thousands of galaxies in all. Each galaxy is an “island universe” similar to the Milky Way — a vast assemblage of millions or billions of stars.
StarDate Online 12 Mar 2018, 05:00 UTC The proper names of the three brightest stars of Leo, the lion, all sound like destinations from a spy thriller: Regulus, Denebola, and Algieba. And the fourth-brightest star sounds pretty exotic, too: Zosma. It’s from a Greek words that means “girdle,” because the star marks the lion’s hip. Unfortunately, though, the star itself isn’t all that exotic. It’s in the prime of life, so it’s fusing the hydrogen in its core to make helium. It’s the same phase of life the Sun is in, known as the main sequence.
StarDate Online 11 Mar 2018, 06:00 UTC If you have access to a dark skywatching site, far from the glow of city lights, this is a great evening to look at the Milky Way. It arcs high overhead as darkness falls, so it’s quite a sight. And the Moon doesn’t rise until the wee hours of the morning, so it won’t spoil the show. That faint, milky band of light outlines the disk of the Milky Way galaxy. It’s the combined glow of millions of stars. The stars are so far and faint that we can’t see them individually with our eyes alone.
StarDate Online 10 Mar 2018, 06:00 UTC When the Cassini spacecraft arrived at Saturn almost 14 years ago, its first target was Phoebe, a moon that’s millions of miles from Saturn. Cassini’s pictures revealed an object that’s taken a beating over the eons. It’s been hit by so many big space rocks that it’s no longer round — it has an irregular shape because chunks of its surface have been blasted into space. Phoebe may not have been born with Saturn. Instead, it might have formed in the Kuiper Belt — a vast ring of rocky and icy bodies beyond the realm of the planets. An encounter with another object kicked it out of the Kuiper Belt. It moved toward the Sun, and was captured by Saturn.
StarTalk Radio 9 Mar 2018, 23:40 UTC Join Neil deGrasse Tyson, comic co-host Chuck Nice, and astrophysicist Janna Levin as they celebrate the life and achievements of Albert Einstein and his impact on the scientific world around us including the detection of gravitational waves at LIGO.
StarDate Online 9 Mar 2018, 06:00 UTC The Moon and two planets form an arc in the early morning sky tomorrow. Orange Mars is to the right of the Moon, with golden Saturn to the lower left of the Moon. Mars is considered one of the best possible homes for microscopic life in the solar system. That’s mainly because Mars appears to have a fair amount of water. There’s frozen water in the polar ice caps, and buried below the surface. There’s water vapor in the atmosphere. And there’s evidence that liquid water once formed rivers and lakes on the surface. That raises hopes that some liquid water could pool below the surface today.
StarDate Online 8 Mar 2018, 06:00 UTC People are pretty adaptable. We’ve learned to live in some harsh conditions: deserts, jungles, mountaintops — and even the South Pole. Someday, though, people may live in an environment that’s even tougher: the surface of Mars. And it’s certain to take some getting used to. In some ways, Mars is much like Earth. Its day is only a bit longer than Earth’s, so the cycle of day and night is quite similar. It’s tilted on its axis at about the same angle as Earth, too, so the pattern of the seasons is similar to our own as well. And Mars has a thin atmosphere, which adds clouds and a bit of color to the sky.
ESOcast 7 Mar 2018, 11:00 UTC New data from the Atacama Large Millimeter/submillimeter Array (ALMA) and other telescopes have been used to create a stunning image showing a web of filaments in the Orion Nebula. These features appear red-hot and fiery, but in reality are so cold that astronomers must use telescopes like ALMA to observe them.