Our observable universe is 13.8 billion years old. It’s about 93 billion light years in diameter. It contains at least 200 billion galaxies and over 700 quintillion planets. As of now, over 4,300 exoplanets has been confirmed. They’re called exoplanets because they exist outside our solar system. At least 55 of them orbit in the habitable zone of other stars. Our Milky Way galaxy is 100,000 light-years across. That’s basically 946 quadrillion km (588 quadrillion mi).
The Milky Way galaxy contains up to 400 billion stars and anywhere between 100 to 200 billion planets. Our galaxy alone contains at least 6 billion Earth-like planets. These are planets that may have the right conditions to support the existence of life. With all these astonishing numbers of galaxies, starts and planets, do you still think we’re alone in the universe? Our solar system alone contains promising places where we could find alien life. The list includes Titan (Saturn’s largest moon), Enceladus (Saturn’s sixth-largest moon), Europa (Jupiter’s ocean moon) and Mars.
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Posted by starwatcher-alThe occultation of Mars on the 7th.
Posted by starwatcher-alThe occultation of Mars on the 7th.
Posted by starwatcher-alSolar minimum was in 2019 so the sun is ramping up in flares, spots and prominences.
Posted by starwatcher-alI missed the early phases of the eclipse but the clouds mostly left during totality. All in all a great eclipse. Next one is Nov. 8-22
Posted by starwatcher-alI missed the early phases of the eclipse but the clouds mostly left during totality. All in all a great eclipse. Next one is Nov. 8-22
Posted by RobecologyFor those following the JWST.
Posted by AnonySchmoose The post-launch set-up of the new James Webb telescope has gone very well.
Posted by HumanistJohnImages taken with Stellina (80 mm): M33 Triangulum Galaxy M1 Crab Nebula NGC281 Pacman Nebula in Cassiopeia NGC 6992 Veil Nebula in Cygnus
Posted by HumanistJohnImages taken with Stellina (80 mm): M33 Triangulum Galaxy M1 Crab Nebula NGC281 Pacman Nebula in Cassiopeia NGC 6992 Veil Nebula in Cygnus
Posted by HumanistJohnImages taken with Stellina (80 mm): M33 Triangulum Galaxy M1 Crab Nebula NGC281 Pacman Nebula in Cassiopeia NGC 6992 Veil Nebula in Cygnus
Posted by HumanistJohnImages taken with Stellina (80 mm): M33 Triangulum Galaxy M1 Crab Nebula NGC281 Pacman Nebula in Cassiopeia NGC 6992 Veil Nebula in Cygnus
Posted by HumanistJohnImages taken October 2nd 2021 with Stellina 1.
Posted by HumanistJohnImages taken October 2nd 2021 with Stellina 1.
Posted by HumanistJohnImages taken October 2nd 2021 with Stellina 1.
Posted by starwatcher-al Did you know that you can see Venus in the daytime?
Posted by starwatcher-alOne of these days I think that I'll figure out this Nikon.