Astronomy thread/Kìng a teri tanhìyä tìftia

Vawmataw · January 08, 2020, 05:37:16 PM

Disappointed about KIC 9832227? Don't worry, there's another nova coming... in 2083!

https://earthsky.org/space/v-sagittae-to-go-nova-around-2083

Toliman · January 08, 2020, 06:03:39 PM

heh, 2083... too long time

However it would be nice if we could observe something like this...

Toliman · January 10, 2020, 09:21:10 AM

Today we have a penumbral lunar eclipse.
https://moonblink.info/Eclipse/eclipse/2020_01_10

All looks fine for me, except weather....

Toliman · January 10, 2020, 04:13:29 PM

Quote from: Toliman on January 10, 2020, 09:21:10 AM
All looks fine for me, except weather....

Maybe mother nature love me, because I had partly cloudy sky in right time

It was less interesting penumbral eclipse, but in any case better than nothing.

Vawmataw · January 10, 2020, 05:21:36 PM

You're lucky because it was daytime for me.

Could you see some dimming on the edge of the Moon?

Toliman · January 10, 2020, 05:27:42 PM

Quote from: Vawmataw on January 10, 2020, 05:21:36 PM
Could you see some dimming on the edge of the Moon?

Yeah, it was good visible. Very helpful was that there was not any area of dark moon "seas" on dimmed part of moon surface so difference in brightness was good visible.

Vawmataw · January 10, 2020, 06:02:49 PM

It reminds me of the February 10, 2017 eclipse.

I probably had a similar view.

As you can notice there was a thin layer of clouds.

Toliman · January 10, 2020, 06:05:38 PM

Quote from: Vawmataw on January 10, 2020, 06:02:49 PM
It reminds me of the February 10, 2017 eclipse.
I probably had a similar view.

Yeah, it was very similar

When you will can observe next eclipse?

Vawmataw · January 10, 2020, 06:11:12 PM

The next one is on July 4-5, but the view is bad.
There's another one in November, but it will still be dimmer.
So the next interesting eclipses are in 2021.

Toliman · January 10, 2020, 06:13:52 PM

Yeah, that eclipse at July 4-5 will be visible for me too but it will be not too interesting eclipse.
For next interesting one, I have to wait to 2023.

Toliman · January 11, 2020, 04:12:09 PM

GOLDILOCKS STARS ARE BEST PLACES TO LOOK FOR LIFE
https://hubblesite.org/contents/news-releases/2020/news-2020-06

ORANGE DWARF STARS MOST LIKELY TO HOST PLANETS
To date astronomers have discovered over 4,000 planets orbiting other stars. Statistically, there should be over 100 billion planets in our Milky Way galaxy. They come in a wide range of sizes and characteristics, largely unimagined before exoplanets were first discovered in the mid-1990s. The biggest motivation for perusing these worlds is to find "Genesis II," a planet where life has arisen and evolved beyond microbes. The ultimate payoff would be finding intelligent life off the Earth.

A major step in searching for habitable planets is finding suitable stars that could foster the emergence of complex organisms. Because our Sun has nurtured life on Earth for nearly 4 billion years, conventional wisdom would suggest that stars like it would be prime candidates. But stars like our Sun represent only about 10% of the Milky Way population. What's more, they are comparatively short-lived. Our Sun is halfway through its estimated 10 billion-year lifetime.

Complex organisms arose on Earth only 500 million years ago. And, the modern form of humans has been here only for the blink of an eye on cosmological timescales: 200,000 years. The future of humanity is unknown. But what is for certain is that Earth will become uninhabitable for higher forms of life in a little over 1 billion years, as the Sun grows warmer and desiccates our planet.

Therefore, stars slightly cooler than our Sun — called orange dwarfs — are considered better hang-outs for advanced life. They can burn steadily for tens of billions of years. This opens up a vast timescape for biological evolution to pursue an infinity of experiments for yielding robust life forms. And, for every star like our Sun there are three times as many orange dwarfs in the Milky Way.

The only type of star that is more abundant are red dwarfs. But these are feisty little stars. They are so magnetically active they pump out 500 times as much radiation in the form of X-rays and ultraviolet light as our Sun does. Planets around these stars take a beating. They would be no place to call home for organisms like us.

https://hubblesite.org/contents/news-releases/2020/news-2020-06

Vawmataw · January 12, 2020, 08:41:54 PM

A true gem made of real photos from the Rosetta mission
https://www.youtube.com/watch?v=GEgMRjl76NY

It looks almost like they've filmed some place on Earth :O

Toliman · January 13, 2020, 10:11:52 AM

It looks amazing

Toliman · January 24, 2020, 08:54:07 AM

I had tonight glear moonless sky again after longer time so I observed deep sky. It was good observation although sky conditions were rather average.
I observed open clusters in Auriga and Gemini (M36-38 + few smaller), Messier's galaxies in Leo, Ursa Major and Canes Venatici and globular clusters M3, M53 and NGC2419.
The best objects of night were globular cluster M53 (nice structure!), galaxy M51 (nice spiral arms) and next galaxy M82 (nice dust lines and structures).