Tema: Vesti iz astronomije

[astrogule]

Konjukcija Venere i Jupitera - kompozitna fotka sa Mesecom od veceras

https://www.flickr.com/photos/astrophotography/19118359800/in/dateposted-public/

[Miki]

Meteorska kiša sutra u noći između 12. i 13. avgusta.
http://www.blic.rs/Slobodno-vreme/Zanimljivosti/581992/PRIZOR-ZA-PAMCENJE-Sutra-uvece-na-nebu-iznad-Srbije-spektakularna-meteorska-kisa

[aca asceric]

Veceras je mesec plave boje .

[Profiamater]

Danas nakon 00h 59min 59s je dodata jedna sekunda -poznata kao "prestupna sekunda" (računata kao 00h 59min 60s) pa je "tek" potom bilo 01h 00min 00s.

[Miki]

Big news!   
Otkriveno čak 7 novih planeta približne veličine kao Zemlja koje orbitiraju oko TRAPPIST-1 zvezde! 
6 od 7 planeta se nalaze u temperaturno favorizovanoj zoni za moguć vanzemaljski život gde temperatura vazduha varira od 0-100C.
Na tri od 6 navedenih planeta jeste moguće postojanje okeana sa tečnom vodom što dodatno povećava mogućnost za neki oblik života.
Orbite ovih planeta su izuzetno blizu svojoj matičnoj zvezdi, tako da je period obilaska planeta oko zvezde reda od 1.5 do 20 dana.
Ono što je nekako intuitivno jasno jeste nemogućnost obilaska ovih 7 drugara, jer je TRAPPIST-1 sistem udaljen svega 40 svetlosnih godina od Zemlje.

[Joe]

E sad ako ne nađemo vanzemaljski život... 

[Paun79]

https://www.b92.net/info/vesti/index.php?yyyy=2017&mm=09&dd=06&nav_category=12&nav_id=1300917

 Intenzivna solarno-geomagnetska oluja koja sa Sunca stiže do Zemlje može danas i sutra u Srbiji dovesti do poremećaja elektro-mreže i distributivnih sistema.

Dodaje se da "geoefektivnost solarne i geomagnetske bure može imati uticaja na promene meteoroloških parametara i na formiranje vremenskih prilika".

[skomimaster]

Jedino mi ova tema deluje prikladno, nadam se da nisam omasio. 

Solar experts predict the Sun’s activity in Solar Cycle 25 to be below average, similar to Solar Cycle 24.

https://www.weather.gov/news/190504-sun-activity-in-solar-cycle

Scientists charged with predicting the Sun’s activity for the next 11-year solar cycle say that it’s likely to be weak, much like the current one. The current solar cycle, Cycle 24, is declining and predicted to reach solar minimum - the period when the Sun is least active - late in 2019 or 2020.

Solar Cycle 25 Prediction Panel experts said Solar Cycle 25 may have a slow start, but is anticipated to peak with solar maximum occurring between 2023 and 2026, and a sunspot range of 95 to 130. This is well below the average number of sunspots, which typically ranges from 140 to 220 sunspots per solar cycle. The panel has high confidence that the coming cycle should break the trend of weakening solar activity seen over the past four cycles.

“We expect Solar Cycle 25 will be very similar to Cycle 24: another fairly weak cycle, preceded by a long, deep minimum,” said panel co-chair Lisa Upton, Ph.D., solar physicist with Space Systems Research Corp. “The expectation that Cycle 25 will be comparable in size to Cycle 24   means that the steady decline in solar cycle amplitude, seen from cycles 21-24, has come to an end and that there is no indication that we are currently approaching a Maunder-type minimum in solar activity.”

Prognoza SWPC-a (Space Weather Prediction Center) @NOAA


Prethodni ciklusi

Izvor: SpaceWeatherLive