Новости из категории: astronet

Leaning Tower, Active Sun

Пт, Апрель 01, 2022 - 8:30

The natural filter of a hazy atmosphere offered this recognizable architecture and sunset view on March 27. Dark against the solar disk, large sunspots in solar active regions 2975 and 2976 are wedged between the Duomo of Pisa and its famous..

PZ Mon: Influence of Spots on Radial Velocity Measurements

Чт, Март 31, 2022 - 16:59

We present calculations of radial velocity corrections along the phase curve due to influence of the spotted surface of the active giant, PZ Mon. The maximum deviation from a relatively uniformly-bright stellar disk is about 0.20 -..

Exploring the Antennae

Чт, Март 31, 2022 - 7:30

Some 60 million light-years away in the southerly constellation Corvus, two large galaxies are colliding. Stars in the two galaxies, cataloged as NGC 4038 and NGC 4039, very rarely collide in the course of the ponderous cataclysm that lasts..

Exploring the Antennae

Чт, Март 31, 2022 - 7:30

Animation: Odd Radio Circles

Ср, Март 30, 2022 - 8:30

What do you call a cosmic puzzle that no one expected to see? In this case, Odd Radio Circles, aka ORCs. ORC-1 typifies the enigmatic five objects, only visible at radio frequencies, that were serendipitously discovered in 2019..

Venus and Mars: Passing in the Night

Вт, Март 29, 2022 - 8:30

When two planets pass on the night sky, they can usually be seen near each other for a week or more. In the case of this planetary conjunction, Venus and Mars passed within 4 degrees of each other earlier this month.

День открытых дверей на Пущинской РадиоАстрономической Обсерватории: 9 апреля 2022 г.

Пн, Март 28, 2022 - 10:13

В честь своего дня рождения (обсерватория была основана 11 апреля 1956 г.), дня рождения Пущинского научного центра (основан на три..

Gems of a Maldivean Night

Пн, Март 28, 2022 - 8:30

The southernmost part of the Milky Way contains not only the stars of the Southern Cross, but the closest star system to our Sun -- Alpha Centauri. The Southern Cross itself is topped by the bright, yellowish star Gamma Crucis.

Titan Seas Reflect Sunlight

Вс, Март 27, 2022 - 8:30

Why would the surface of Titan light up with a blinding flash? The reason: a sunglint from liquid seas. Saturn's moon Titan has numerous smooth lakes of methane that, when the angle is right, reflect sunlight as if they were mirrors.

Pluto at Night

Сб, Март 26, 2022 - 7:30

The night side of Pluto spans this shadowy scene. In the stunning spacebased perspective the Sun is 4.9 billion kilometers (almost 4.5 light-hours) behind the dim and distant world. It was captured...

Журнал “Небосвод” за май 2022 года

Пт, Март 25, 2022 - 13:03

Очередной выпуск журнала для любителей астрономии "Небосвод"

The Medusa Nebula

Пт, Март 25, 2022 - 6:30

Braided and serpentine filaments of glowing gas suggest this nebula's popular name, The Medusa Nebula. Also known as Abell 21, this Medusa is an old planetary nebula some 1,500 light-years away in the constellation Gemini. Like its..