Новости из категории: astronet

New Cataclysmic Variable in Pisces: A WZ Sge-subtype Star with Rebrightenings

Вт, Декабрь 07, 2021 - 15:00

In September, 2021, we obtained about 1100 UBVRcIc CCD observations of the dwarf nova with coordinates RA=23h11m10.9s; Dec=+01deg30'03" (J2000) during its outburst. Our analysis of this photometric series showed that the studied variable..

Ninety Gravitational Wave Spectrograms and Counting

Вт, Декабрь 07, 2021 - 8:30

Every time two massive black holes collide, a loud chirping sound is broadcast out into the universe in gravitational waves. Humanity has only had the technology to hear these unusual chirps for the past seven years, but since then we..

Space Station Silhouette on the Moon

Пн, Декабрь 06, 2021 - 8:30

What's that unusual spot on the Moon? It's the International Space Station. Using precise timing, the Earth-orbiting space platform was photographed in front of a partially lit gibbous Moon last month.

Total Solar Eclipse Below the Bottom of the World

Вс, Декабрь 05, 2021 - 8:30

Yesterday there was a total solar eclipse visible only at the end of the Earth. To capture the unusual phenomenon, airplanes took flight below the clouded seascape of Southern Ocean. The featured image shows...

Iridescent by Moonlight

Сб, Декабрь 04, 2021 - 9:30

In this snapshot from November 18, the Full Moon was not far from Earth's shadow. In skies over Sicily the brightest lunar phase was eclipsed by passing clouds though. The full moonlight was dimmed and momentarily diffracted by small but..

Comet Leonard and the Whale Galaxy

Пт, Декабрь 03, 2021 - 8:30

Sweeping through northern predawn skies, on November 24 Comet Leonard (C/2021 A1) was caught between two galaxies in this composite telescopic image. Sporting a greenish coma the comet's dusty tail seems to harpoon the heart of NGC 4631..

Астрономическая неделя с 6 по 12 декабря 2021 года

Пт, Декабрь 03, 2021 - 6:19

На данной неделе комета Leonard (C/2021 A1) при блеске около 6m имеет двойную (утреннюю и вечернюю) видимость.

NGC 6822: Barnard s Galaxy

Чт, Декабрь 02, 2021 - 8:30

Grand spiral galaxies often seem to get all the glory, flaunting their young, bright, blue star clusters in beautiful, symmetric spiral arms. But small galaxies form stars too, like nearby NGC 6822, also known as Barnard's Galaxy.

A Blue Banded Blood Moon

Ср, Декабрь 01, 2021 - 8:30

What causes a blue band to cross the Moon during a lunar eclipse? The blue band is real but usually quite hard to see. The featured HDR image of last week's lunar eclipse, however -- taken from Yancheng, China -- has been digitally..

In Motion: Uranus and Moons

Вт, Ноябрь 30, 2021 - 7:30

What's that moving across the sky? A planet just a bit too faint to see with the unaided eye: Uranus. The gas giant out past Saturn was tracked earlier this month near opposition -- when it was closest to Earth and at its brightest.

The Extraordinary Spiral in LL Pegasi

Пн, Ноябрь 29, 2021 - 8:30

What created the strange spiral structure on the upper left? No one is sure, although it is likely related to a star in a binary star system entering the planetary nebula phase, when its outer atmosphere is ejected.

A High Cliff on Comet Churyumov Gerasimenko

Пн, Ноябрь 29, 2021 - 0:30

This high cliff occurs not on a planet, not on a moon, but on a comet. It was discovered to be part of the dark nucleus of Comet Churyumov-Gerasimenko (CG) by Rosetta, a robotic spacecraft launched by ESA that rendezvoused with the..