Anonymous ID: a25939 Aug. 15, 2023, 6:45 a.m. No.19362690   🗄️.is 🔗kun   >>2708 >>2844 >>3096 >>3180 >>3228

NASA Astronomy Picture of the Day

Aug 15, 2023

 

A Triply Glowing Night Sky over Iceland

 

The Sun is not the quiet place it seems. It expels an unsteady stream of energetic electrons and protons known as the solar wind. These charged particles deform the Earth's magnetosphere, change paths, and collide with atoms in Earth's atmosphere, causing the generation of light in auroras like that visible in green in the image left. Earth itself is also geologically active and covered with volcanoes. For example, Fagradalsfjall volcano in Iceland, seen emitting hot gas in orange near the image center. Iceland is one of the most geologically active places on Earth. On the far right is the Svartsengi geothermal power plant which creates the famous human-made Blue Lagoon, shown emitting white gas plumes. The featured composition therefore highlights three different sky phenomena, including both natural and human-made phenomena.

 

https://apod.nasa.gov/apod/astropix.html?

Anonymous ID: a25939 Aug. 15, 2023, 7:25 a.m. No.19362961   🗄️.is 🔗kun   >>3096 >>3180 >>3228

Russia's Luna-25 moon lander snaps 1st pictures from space (photos)

Aug 14, 2023

 

Russia's first lunar lander since 1976 has beamed back its first images from space.

 

The Luna-25 mission lifted off on Aug. 10 atop a Soyuz-2.1b rocket from the Vostochny Cosmodrome in Russia's far eastern Amur Region, marking the first domestically produced probe sent to the moon in modern Russian history. The last moon mission from what is now Russia, Luna-24, took off in 1976 and returned about 6.2 ounces (170 grams) of lunar samples. The launch of Luna-25 faced multiple delays due in part to Russia's war on Ukraine, which has had wide-ranging effects on international spaceflight cooperation.

 

Luna-25's first images were taken on Sunday (Aug. 13) and published Monday (Aug. 14) by the Space Research Institute of the Russian Academy of Sciences (IKI RAS). The black-and-white photo collection shows the Russian flag and mission patch on the spacecraft's structure alongside images of Earth and the moon shining bright against the blackness of space.

 

"These images show the elements of the device's design against the background of the Earth, from which we have already departed forever, and against the background of the moon, to which we will soon arrive," Russian state space agency Roscosmos wrote in a statement published on Telegram on Aug. 14 (translation by Google).

 

The images were taken at a distance of about 192,625 miles (310,000 km) from Earth, according to IKI RAS. The moon, by comparison, is around 238,855 miles (384,400 km) away from Earth, on average.

 

While there was some initial speculation published on social media about the state of Luna-25 in the days following its launch, the images appear to dispel these worries and prove the lander is healthy and on its way to its lunar destination.

 

"All systems of the spacecraft are operating normally, communication with the station is stable, and the energy balance is positive," IKI RAS wrote in a statement accompanying the images (translation by Google).

 

If all goes according to plan, Luna-25 will reach the moon on Tuesday (Aug. 15) before orbiting Earth's glowing white satellite for five to seven days. From there, the probe will attempt a landing near one of three craters surrounding the lunar south pole. The probe was designed to operate for at least one year.

 

Once on the lunar surface, assuming its landing goes well, Luna-25 will analyze lunar soil, search for water ice and conduct experiments about the moon's thin atmosphere. The lander carries eight different instruments including a laser mass spectrometer and a device that can zap lunar soil samples then examine the resulting fumes to analyze chemical composition.

 

Luna-25 adds to a growing list of international moon missions aimed at either studying or landing near the lunar south pole region.

 

India's Chandrayaan-3 rover entered lunar orbit on Aug. 7 and is expected to touch down near the moon's south pole on Aug. 23. South Korea launched the Korea Pathfinder Lunar Orbiter (KPLO) in August 2022 carrying the NASA-operated ShadowCam designed to help hunt for water ice near the moon's south pole.

 

https://www.space.com/russia-moon-lander-luna-25-1st-photos-from-space

https://iki.cosmos.ru/news/ot-zemli-uleteli-letim-k-lune

Anonymous ID: a25939 Aug. 15, 2023, 7:58 a.m. No.19363168   🗄️.is 🔗kun   >>3180 >>3228

Perseid meteor shower 2023 thrills stargazers around the world. See their amazing photos.

Aug 15, 2023

 

The prolific Perseid meteor shower put on quite the show and we've rounded up some of the best photos from around the world to prove it.

 

With the moon only 10% illuminated during the time of the peak — the night of Aug.12 and before dawn on Aug. 13 — viewing conditions for the Perseids were much better than last year which unfortunately saw meteors outshined by the full moon.

 

The Perseids are caused by Earth passing through debris — bits of ice and rock — left behind by Comet Swift-Tuttle which last passed close to Earth in 1992. The Perseids peak when Earth passes through the densest and dustiest area on Aug. 11-12. Years without moonlight see higher rates of meteors per hour, and in outburst years (such as in 2016) the rate can be between 150-200 meteors an hour!

 

Don't worry if you didn't catch any during the peak, the Perseid meteor shower remains active until around Aug. 24, though fewer meteors per hour will be visible compared to the shower's peak.

 

(more images in link)

 

https://www.space.com/perseid-meteor-shower-2023-amazing-photos