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Stars and other Celestial Stellar objects

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Eugene Cernan, last man on the moon, dies. The retired United States Navy captain was 82.

Eugene Cernan, last man on the moon, dies

His family confirmed the news in a statement Monday, saying he died following "ongoing health issues. " "Our family is heartbroken, of course, and we truly appreciate everyone's thoughts and prayers. Gene, as he was known by so many, was a loving husband, father, grandfather, brother and friend," the family said. Cernan's death comes a little more than a month after fellow astronaut John Glenn died in December. Up until his death he was passionate about space exploration and hoped America's leaders would not let him remain the last man to walk on the Moon, his family said.

In his last conversation with NASA Administrator Charles Bolden, Cernan spoke of his "lingering desire" to inspire America's youth to study science, technology, engineering and mathematics "and to dare to dream and explore," NASA said. "Gene's footprints remain on the moon, and his achievements are imprinted in our hearts and memories," Bolden said. "Your Popie went to Heaven. What It Looks Like To Leave Our Solar System At The Speed Of Light. Time-Lapse Videos. This clickable map organizes all of the existing time-lapse sequences into geographical regions.

Time-Lapse Videos

These videos are organized to both aid in searching for a desired area of the Earth, and to break down the volume of the existing time-lapse sequences. Each region below is separated by regions around the world, as well as links below the clickable map to the "Aurora Borealis and Australis" and "Special Videos". The newest release of time-lapse sequences will be posted just below these two sections. Latest videos from the crew Over Asia at Night This video was taken by the Expedition 46 crew on board the International Space Station. Date posted: 2016/05/11. Blue Moon Stories: Spaceweather.com. "Once in a blue moon...

Blue Moon Stories: Spaceweather.com

" means seldom or absurd. But, believe it or not, sometimes the moon really does turn blue, usually after volcanic eruptions or major forest fires. Volcanoes and wildfires fill the air with ash and dust. What Is a Blue Moon? A blue moon is full moon that occurs as the second full moon in a given month.

What Is a Blue Moon?

Wayward satellites repurposed to test general relativity. ESA/J.Huart An artist's conception of one of the Galileo GPS satellites.

Wayward satellites repurposed to test general relativity

Two satellites that were accidentally launched into the wrong orbit will be repurposed to make the most stringent test to date of a prediction made by Albert Einstein’s general theory of relativity — that clocks run more slowly the closer they are to heavy objects. The satellites, operated by the European Space Agency (ESA), were mislaunched last year by a Russian Soyuz rocket that put them into elliptical, rather than circular, orbits. Volcanic rock hints at source of Earth’s water. Arctic-Images/Corbis Lava from Earth's mantle has given scientists clues about the origin of the planet's water.

Volcanic rock hints at source of Earth’s water

The origin of Earth’s water has puzzled scientists for decades. Icy comets smashing into the planet seemed like natural donors, but many comets have water chemistry different from that of Earth’s oceans. Rocky asteroids that contain water might have soaked the young planet, but analyses of meteorites — the asteroids’ remnants on Earth — show that the planet today is missing the material that those impacts should have left behind.

Research published today in Science1 provide evidence for a different theory: that water has been around since the Earth formed, trapped on grains of dust that aggregated to make a planet. Jupiter's Icy Moon Europa: Best Bet for Alien Life? WASHINGTON — Jupiter's moon Europa doesn't look like a particularly inviting place for life to thrive; the icy satellite is nearly 500 million miles (800 million kilometers) from the sun, on average.

Jupiter's Icy Moon Europa: Best Bet for Alien Life?

But beneath its icy crust lies a liquid ocean with more water than Earth contains. This ocean is shielded from harmful radiation, making Europa one of the solar system's best bets to host alien life. That's one of the reasons Europa is so alluring to scientists. Airglow Formation. Captures of elusive red sprites from ISS. Lightning sprite, or red sprite, above a thunderstorm in northwest Mexico.

Captures of elusive red sprites from ISS

Cygnus. In Greek mythology there are four characters known as Cycnus or Cygnus, listed on this Wikipedia webpage.

Cygnus

The words Cygnus and cygnet, a young swan, are from Latin cygnus, 'swan', Greek kuknos. The English word swan comes from the Indo-European root *swen- 'To sound'. Derivatives: swan¹ (from Old English swan), sone (a subjective unit of loudness, as perceived by a person with normal hearing), resonate, sonic, sonnet, sound¹, unison, (these words from Latin sonus), sonar, sonant (voiced, as a speech sound), sonata, sonorous, assonance, consonant, dissonant, resound, (these words from Latin sonare, to sound).

[Pokorny swen- 1046. Watkins]. “But in some cases, with incorrect usage and improperly, a sound is called a 'voice,' as for example "the voice of the trumpet bellowed," and (Vergil, Aen. 3-556): ... and voices broken on the shore. Swans spend a lot of their time swimming on lakes, where they do their courting. Eltanin and Rastaban are the Dragon's Eyes. Our human eyes and brains tend to pick out pairs of stars on the dome of night, especially if the two stars are relatively bright.

Eltanin and Rastaban are the Dragon's Eyes

Few such couplings represent true partner stars in space, however; rarely are the two stars gravitationally bound. Some well-known stellar pairs that are not truly bound include the two stars of the constellation Gemini the Twins – Castor and Pollux – as well as the Little Dipper’s bowl stars Kochab and Pherkad. On Northern Hemisphere summer nights, another famous pair of stars glares down at us from up high in the northern sky. These stars are Eltanin and Rastaban. Constellations & Ancient Civilizations.