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На данной неделе 20 мая Луна (Ф= 0,9+) пройдет севернее Спики, а 23 мая Венера пройдет в 0,2 гр. севернее Юпитера. 24 мая Луна (Ф= 0,99-) пройдет близ Антареса (покрытие при видимости в Америке и Африке)

In a small field in Cygnus, I discovered seven new DSCTC stars that demonstrate multiperiodic pulsations from V-band CCD observations. For each of these stars, from two to four reliable pulsation frequencies could be derived. The paper presents finding charts, frequency spectra, light curves for program stars. New high-quality multi-band observations of the discovered variable stars with larger telescopes are needed.

Как выглядела огромная активная область, недавно создавшая полярные сияния, когда она подошла к краю Солнца? В этом месте лучше видна трехмерная структура AR 3664. На картинке запечатлен большой протуберанец из нескольких компонентов. Он протянулся в космическое пространство из хаотичной области солнечных пятен AR 3664 – еще один пример облаков из частиц, выброшенных из активной области.

For the mostly harmless denizens of planet Earth, the brighter stars of open cluster NGC 2169 seem to form a cosmic 37. Did you expect 42? From our perspective, the improbable numerical asterism appears solely by chance. It lies at an estimated distance of 3,300 light-years toward the constellation Orion.

It was larger than the Earth. It was so big you could actually see it on the Sun's surface without magnification. It contained powerful and tangled magnetic fields as well as numerous dark sunspots.

Northern lights don't usually reach this far south. Magnetic chaos in the Sun's huge Active Region 3664, however, produced a surface explosion that sent a burst of electrons, protons, and more massive, charged nuclei into the Solar System.

Right now, one of the largest sunspot groups in recent history is crossing the Sun. Active Region 3664 is not only big -- it's violent, throwing off clouds of particles into the Solar System. Some of these CMEs are already impacting the Earth, and others might follow.

Relax and watch two black holes merge. Inspired by the first direct detection of gravitational waves in 2015, this simulation plays in slow motion but would take about one third of a second if run in real time. Set on a cosmic stage, the black holes are posed in front of stars, gas, and dust.

Bright elliptical galaxy Messier 87 (M87) is home to the supermassive black hole captured in 2017 by planet Earth's Event Horizon Telescope in the first ever image of a black hole. Giant...

What would it look like to circle a black hole? If the black hole was surrounded by a swirling disk of glowing and accreting gas, then the great gravity of the black hole would deflect light emitted by the disk to make it look very unusual. The featured animated video gives a visualization.