Written by Guy Webster
Pasadena, CA – From the most powerful telescope orbiting Mars comes a new view of Earth and its moon, showing continent-size detail on the planet and the relative size of the moon.
The image combines two separate exposures taken on November 20th, 2016, by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter. The images were taken to calibrate HiRISE data, since the reflectance of the moon’s Earth-facing side is well known.
Written by Elizabeth Landau
Pasadena, CA – A team of researchers has compiled a special catalog to help astronomers figure out the true distances to tens of thousands of galaxies beyond our own Milky Way.
The catalog, called NED-D, is a critical resource, not only for studying these galaxies, but also for determining the distances to billions of other galaxies strewn throughout the universe.
As the catalog continues to grow, astronomers can increasingly rely on it for ever-greater precision in calculating both how big the universe is and how fast it is expanding.
Written by DC Agle
Pasadena, CA – NASA has selected two missions that have the potential to open new windows on one of the earliest eras in the history of our solar system – a time less than 10 million years after the birth of our sun. The missions, known as Lucy and Psyche, were chosen from five finalists and will proceed to mission formulation, with the goal of launching in 2021 and 2023, respectively.
“Lucy will visit a target-rich environment of Jupiter’s mysterious Trojan asteroids, while Psyche will study a unique metal asteroid that’s never been visited before,” said Thomas Zurbuchen, associate administrator for NASA’s Science Mission Directorate in Washington. “This is what Discovery Program missions are all about – boldly going to places we’ve never been to enable groundbreaking science.”
Written by Felicia Chou
Washington, D.C. – NASA has selected a science mission that will allow astronomers to explore, for the first time, the hidden details of some of the most extreme and exotic astronomical objects, such as stellar and supermassive black holes, neutron stars and pulsars.
Objects such as black holes can heat surrounding gases to more than a million degrees. The high-energy X-ray radiation from this gas can be polarized – vibrating in a particular direction.
Written by Steve Cole
Washington, D.C. – NASA has selected a first-of-its-kind Earth science mission that will extend our nation’s lead in measuring key greenhouse gases and vegetation health from space to advance our understanding of Earth’s natural exchanges of carbon among the land, atmosphere and ocean.
The primary goals of the Geostationary Carbon Cycle Observatory (GeoCARB), led by Berrien Moore of the University of Oklahoma in Norman, are to monitor plant health and vegetation stress throughout the Americas, and to probe, in unprecedented detail, the natural sources, sinks and exchange processes that control carbon dioxide, carbon monoxide and methane in the atmosphere.
Written by Bob Jacobs / Allard Beutel
Washington, D.C. – In 2016, NASA drove advances in technology, science, aeronautics and space exploration that enhanced the world’s knowledge, innovation, and stewardship of Earth.
“This past year marked record-breaking progress in our exploration objectives,” said NASA Administrator Charles Bolden. “We advanced the capabilities we’ll need to travel farther into the solar system while increasing observations of our home and the universe, learning more about how to continuously live and work in space, and, of course, inspiring the next generation of leaders to take up our Journey to Mars and make their own discoveries.”
Washington, D.C. – 2017 is beginning with fireworks.
No, not those fireworks…
We’re talking about a lightshow from shattered comet 2003 EH1.
According to the International Meteor Organization and other forecasters, Earth will pass through a stream of debris from the comet on January 3rd, 2017, producing a shower of meteors known as the Quadrantids.
Written by Karen C. Fox
Greenbelt, MD – On December 31st, 2016, official clocks around the world will add a leap second just before midnight Coordinated Universal Time — which corresponds to 6:59:59pm EST. NASA missions will also have to make the switch, including the Solar Dynamics Observatory, or SDO, which watches the sun 24/7.
Clocks do this to keep in sync with Earth’s rotation, which gradually slows down over time. When the dinosaurs roamed Earth, for example, our globe took only 23 hours to make a complete rotation. In space, millisecond accuracy is crucial to understanding how satellites orbit.
Written by DC Agle
Pasadena, CA – NASA’s NEOWISE mission has recently discovered some celestial objects traveling through our neighborhood, including one on the blurry line between asteroid and comet. Another–definitely a comet–might be seen with binoculars through next week.
An object called 2016 WF9 was detected by the NEOWISE project on November 27th, 2016. It’s in an orbit that takes it on a scenic tour of our solar system. At its farthest distance from the sun, it approaches Jupiter’s orbit.
Written by Guy Webster
Pasadena, CA – NASA’s Mars Odyssey orbiter, which has been in service at Mars since October 2001, put itself into safe mode — a protective standby status — on December 26th, while remaining in communication with Earth.
The Odyssey project team has diagnosed the cause — an uncertainty aboard the spacecraft about its orientation with regard to Earth and the sun — and is restoring the orbiter to full operations.
Now playing at the Movies
Showtime information provided by Discover Clarksville.
© 2006-2017 Clarksville, TN Online is owned and operated by residents of Clarksville Tennessee.