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Tiempos. Ciclos. Experiencias.

Tiempos. Ciclos. Experiencias.

Halloween, derived from <em>Samhain</em>, a festival of the ancient Celts and Druids,  is a cross-quarter day - midway between the autumn equinox and winter solstice.

At Halloween - and a few days before and after - the bright star Arcturus sets at the same time and on the same spot on the horizon as the summer sun.

Scientists are expanding the definition of habitable zones (the area around a star where a life-sustaining planet might lurk), taking into account the effect of stellar activity that can threaten exoplanets' atmospheres with oxygen loss.

Scientists are expanding the definition of habitable zones (the area around a star where a life-sustaining planet might lurk), taking into account the effect of stellar activity that can threaten exoplanets' atmospheres with oxygen loss.

Photo Hubble

Dazzling Diamonds of Trumpler 14 - A new image captured by the Hubble Space Telescope reveals shimmering jewel-like stars. A cluster of stars known as Trumpler 14 about light-years from Earth contains a couple thousand young, luminous stars.

ISRO working on using kerosene as fuel for semi-cryogenic engine

India's GSLV, Geosynchronous Satellite Launch Vehicle-Mark III: first non-test launch, carrying the the satellite.

An international team of astronomers has, for the first time, seen the strong cosmic magnification and multiple images of a class of supernova called Type Ia. Type Ia supernovas—often referred to as “standard candles” because of their well-known intrinsic brightness—are frequently...

Rare Brightening of a Supernova's Light found by Palomar Observatory Astronomers find multiple images of a magnified "standard candle" in the sky, leading the way to more precise measurements of the expansion rate of our universe

Coming to know the Summer Triangle, then seeing it again and again on summer nights, is a deep pleasure that adds to the enjoyment of this season.

During the summer months, the Summer Triangle star formation lights the sky from dusk until dawn. It consists of three bright stars: Vega in the constellation Lyra, Deneb in the constellation Cygnus, and Altair in the constellation Aquila.

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