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Category: Space: Astronomy

Astronomers measure the mass of a star—thanks to an old tip from Einstein

This Science Magazine shows how a team of astronomers has succeeded in measuring the mass of an isolated star using a technique first suggested by Albert Einstein in 1936.  

NASA Goddard: The Moon May Have Frost

A recent discovery of unusually bright areas near the Moon’s south pole suggests that there could be plenty of water on the surface of the moon. Scientists using data from NASA’s Lunar Reconnaissance Orbiter, or LRO, have identified bright areas in craters near the moon’s south pole that are cold enough to have frost present …

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Latest view of Jupiter from NASA’s Juno spacecraft

The spacecraft Juno arrived at Jupiter a year ago and began to observe the planet. Since then, we have enjoyed several beautiful and fascinating photos that show the planet in its full magnificence. The video below is no exception. It is a composition of 2,400 images that together creates a stunning view of Jupiter. Enjoy. …

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The ‘All-American’ Eclipse of the Sun This August

The Silicon Valley Astronomy Lectures presents Andrew Fraknoi (Foothill College) who talk about the very rare eclipse of the Sun visible throughout the U.S. and North America on August 21, 2017.

Fermilab: “Probing the Dark Universe” – A Lecture by Dr. Josh Frieman

In this one-hour public lecture Josh Frieman, director of the Dark Energy Survey, presents an overview of our current knowledge of the universe and describe new experiments and observatories. Over the last two decades cosmologists have made remarkable discoveries: Only 4 percent of our universe is made of ordinary matter – atoms, molecules, etc. The …

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FinalFrontier: The Largest Galaxy in the Known Universe [IC 1101]

IC 1101 is a supergiant elliptical galaxy at the center of the Abell 2029 galaxy cluster, approximately 320 megaparsecs (1.04 billion light-years) from Earth. Astronomers have measured the galaxy’s diameter at 100,000 light years, at least 60 times the size of the Milky Way.  

Artist’s impression of a trip to the super-Earth exoplanet LHS 1140b

The European Southern Observatory in Chile caught the shadow of a newfound planet, dubbed LHS1140b, it is located 39 light years from Earth. It is believed to be 40 percent larger than Earth. The discovery is described in a scientific paper published in the journal Nature. The below artist’s impression video shows an imaginary trip …

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A large asteroid passes Earth next week

This computer-generated animation by NASA depicts the flyby of asteroid 2014 JO25. The asteroid will safely fly past Earth on April 19, 2017, at a distance of about 1.1 million miles (1.8 million kilometers), or about 4.6 times the distance between Earth and the moon.  

Gresham College: The Accelerating Universe – Professor Joseph Silk

The universe was static, that was the credo of all scientists and philosophers until three decades into the twentieth century when the expansion was discovered. Three-quarters of a century later, the notion of a simple expansion of the universe was found to be wrong: the universe is accelerating. One implication is that before 2000, we …

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Jan Fröjdman: A Fictive Flight Above Real Mars

Filmmaker Jan Fröjdman has spent three months converting HiRISE photos into a short video that allows us to fly over Mars in magnificent fashion. The HiRISE camera has been photographing the Red Planet inch-by-inch from the Mars Reconnaissance Orbiter over the course of 12 years. It has collected around 50,000 still images and NASA has …

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The Verge: What makes a planet a planet?

Over a decade ago, astronomers thought they had found the 10th planet in our Solar System — an object that would eventually be named Eris. But this tiny world never became a planet. Instead it led to Pluto’s famous demotion from a planet to a dwarf planet, a decision that people are still debating to …

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GreshamCollege: The Expanding Universe – Professor Joseph Silk

Professor Joseph Silk FRS embarks on an illustrious journey through the universe to explain the paradigm shift in todays scientific view on the physical expansion of space. It was once inconceivable that the universe could be expanding. The static universe survived three thousand years of analysis and observation, to become enshrined as a cosmological solution …

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Nature: Water in the shadows

In this video we visit some of the coldest, darkest places in our Solar System: craters in the polar regions of Ceres. Ceres is the largest asteroid in the asteroid belt. New images, taken by NASA’s Dawn spacecraft, reveal water ice trapped in a few of these craters, where the Sun never shines. Ceres is …

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SciShow Space: New Clues to the Structure of the Universe

An incredibly bright burst of energy and a dent covered with ice give us insights into planetary and universal structure. Hosted by: Caitlin Hofmeister  

PBS: Space Time | Strange Stars

What happens when matter can’t get any denser yet somehow does? The answer – it becomes “strange.” Strange Stars may be the most massive stellar remnant that is just shy of forming a black hole. And they could be even cooler than black holes. Neutron stars are made of a substance known as Neutronium. It …

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NASA: Supermoon over Baikonur

At the Baikonur Cosmodrome in Kazakhstan, the moon, or supermoon, rises above the launch pad at Launch Complex 1 Nov. 14, where the Soyuz MS-03 spacecraft stands poised to liftoff following its transport to the pad for final pre-launch preparations. A supermoon occurs when the moon’s orbit is closest, or at perigee, to Earth. The …

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NASA: Showstopper Nov. 14 Supermoon Is the Closest Moon to Earth Since 1948

A so called ‘supermoon’ is the coincidence of a full moon with the closest approach the Moon gets to the Earth on its elliptical orbit, resulting in its largest size as seen from Earth. On monday November 14, the full moon makes its closest pass to Earth in its orbit and will appear up to …

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The Planetary Society : The Cosmos Award – The Planetary Post with Robert Picardo

What is the Cosmos Award? The Planetary Society created this award, named after our co-founder Carl Sagan’s landmark television series, Cosmos, to honor the innovators who follow his example of presenting science in an accurate, yet entertaining and enthralling way. Past recipients of the Cosmos Award for Outstanding Public Presentation of Science include filmmaker James …

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PBS: Black Holes from the Dawn of Time | Space Time

Primordial black holes may be lurking throughout our universe. How large are they, how many are out there and what would happen if they moved through our solar system? Scientists believe that many black holes may have been created at the time of the Big Bang and and are still roaming our universe today. If …

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HubbleESA: How many galaxies are there?

A new study using the Hubble Space Telescope and other telescopes has increased the estimate of galaxies in the Universe ten fold. It was previously estimated that there was 100 billion galaxies in the observable Universe. The researchers used deep space images from the Hubble Space Telescope. They converted images to 3D and applied new …

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