Astronomy Picture of the Day

Astronomy Picture Of the Day (APOD)

Лисий мех, Единорог и Новогодняя елка Fox Fur, the Unicorn, and a Christmas Tree

Glowing hydrogen gas fills this gorgeously detailed sky view centered on the variable star S Mon in the faint but fanciful constellation Monoceros, the Unicorn. A star forming region (NGC 2264), the complex jumble...

Танцуют спутники и их тени When Moons and Shadows Dance

It's no wonder Jupiter is a favorite target for even modest earthbound telescopes. The most massive planet in the solar system with four of the largest moons also boasts the famous Great Red Spot, a giant hurricane-like storm system over three hundred years old.

Каньон Подкова в антисумеречных лучах Anticrepuscular Rays Over Horseshoe Canyon

What's happening over the horizon? Although the scene may appear somehow supernatural, nothing more unusual is occurring than a setting Sun and some well placed clouds. Pictured above are anticrepuscular rays. To understand them, start by picturing common crepuscular rays that are seen any time that sunlight pours though scattered clouds.

M42:  газопылевая структура туманности Ориона M42: Wisps of the Orion Nebula

The Great Nebula in Orion, an immense, nearby starbirth region, is probably the most famous of all astronomical nebulas. Here, glowing gas surrounds hot young stars at the edge of an immense interstellar molecular cloud only 1500 light-years away. In the above deep image, faint wisps and sheets of dust and gas are particularly evident.

Комета NEAT прошла мимо вспыхнувшего Солнца Comet NEAT Passes an Erupting Sun

As Comet NEAT flared last week, the Sun roared. Just as the comet swooped inside the orbit of Mercury and developed a long and flowing tail of gas and dust, the Sun emitted a huge Coronal Mass Ejection (CME).

"Крутой" эруптивный протуберанец на Солнце A Twisted Solar Eruptive Prominence

A huge eruptive prominence is seen moving out from our Sun in this condensed half-hour time-lapse sequence. Ten Earths could easily fit in the "claw" of this seemingly solar monster. This large prominence, though, is significant not only for its size, but its shape.

Сатурн в инфракрасном свете Infrared Saturn

This delightfully detailed false-color image of Saturn was taken in January 1998 by the orbiting Hubble Space Telescope. The picture is a combination of three images from Hubble's NICMOS instrument and shows the lovely ringed planet in reflected infrared sunlight.

Таяние снега и овраги на Марсе Melting Snow and the Gullies of Mars

Tantalizing images of gullies on Mars have offered striking evidence for recent flows of liquid water. But Mars is too cold and its atmosphere too thin for liquid water to exist on the surface.

Холодный ветер из туманности Бумеранг Cold Wind from the Boomerang Nebula

A cold wind blows from the central star of the Boomerang Nebula. Seen here in a detailed false-color image recorded in 1998 by the Hubble Space Telescope, the nebula lies about 5,000 light-years away towards the grand southern constellation of Centaurus.

Принцип запрета Паули: почему мы не взрываемся? Pauli Exclusion Principle: Why You Don't Implode

Why doesn't matter just bunch up? The same principle that keeps neutron stars and white dwarf stars from imploding also keeps people from imploding and makes normal matter mostly empty space. The observed reason is known as the Pauli Exclusion Principle.

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