Space Calendar December 30 – January 5 2015

Space related activities and anniversaries for December 30 – January 5 2015. Fetched live every week from NASA JPL

If you want the complete list going more than a year ahead then see the Space Calendar at NASA JPL.

Space Calendar December 23 – December 29 2015

Space related activities and anniversaries for December 23 – December 29 2015. Fetched live every week from NASA JPL

If you want the complete list going more than a year ahead then see the Space Calendar at NASA JPL.

NASA Space Telescopes Solve Missing Water Mystery in Comprehensive Survey of Exoplanets

NASA Space Telescopes Solve Missing Water Mystery in Comprehensive Survey of Exoplanets

A survey of 10 hot, Jupiter-sized exoplanets conducted with NASA’s Hubble and Spitzer space telescopes has led a team to solve a long-standing mystery — why some of these worlds seem to have less water than expected. The findings offer new insights into the wide range of planetary atmospheres in our galaxy and how planets are assembled.

Of the nearly 2,000 planets confirmed to be orbiting other stars, a subset are gaseous planets with characteristics similar to those of Jupiter but that orbit very close to their stars, making them blistering hot.

Their close proximity to the star makes them difficult to observe in the glare of starlight. Due to this difficulty, Hubble has only explored a handful of hot Jupiters in the past. These initial studies have found several planets to hold less water than predicted by atmospheric models.

The international team of astronomers has tackled the problem by making the largest-ever spectroscopic catalog of exoplanet atmospheres. All of the planets in the catalog follow orbits oriented so the planet passes in front of their parent star, as seen from Earth. During this so-called transit, some of the starlight travels through the planet’s outer atmosphere. “The atmosphere leaves its unique fingerprint on the starlight, which we can study when the light reaches us,” explained co-author Hannah Wakeford of NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

[SOURCE: hubblesite.org]

Space Calendar December 16 – December 22 2015

Space related activities and anniversaries for December 16 – December 22 2015. Fetched live every week from NASA JPL

If you want the complete list going more than a year ahead then see the Space Calendar at NASA JPL.

Space Calendar December 9 – December 15 2015

Space related activities and anniversaries for December 9 – December 15 2015. Fetched live every week from NASA JPL

If you want the complete list going more than a year ahead then see the Space Calendar at NASA JPL.

NASA Space Telescopes See Magnified Image of the Faintest Galaxy from the Early Universe

NASA Space Telescopes See Magnified Image of the Faintest Galaxy from the Early Universe

Astronomers harnessing the combined power of NASA’s Hubble and Spitzer space telescopes have found the faintest object ever seen in the early universe. It existed about 400 million years after the big bang, 13.8 billion years ago.

The team has nicknamed the object Tayna, which means “first-born” in Aymara, a language spoken in the Andes and Altiplano regions of South America.

Though Hubble and Spitzer have detected other galaxies that are record-breakers for distance, this object represents a smaller, fainter class of newly forming galaxies that until now have largely evaded detection. These very dim objects may be more representative of the early universe, and offer new insight on the formation and evolution of the first galaxies.

“Thanks to this detection, the team has been able to study for the first time the properties of extremely faint objects formed not long after the big bang,” said lead author Leopoldo Infante, an astronomer at Pontifical Catholic University of Chile (Pontificia Universidad Católica de Chile). The remote object is part of a discovery of 22 young galaxies at ancient times located nearly at the observable horizon of the universe. This research is a substantial increase in the number of known very distant galaxies.

[SOURCE: hubblesite.org]