A place to discuss Space.
The nearest black hole to earth is stegataris A the supermassive black hole in the center of our galaxy
"Telescope is needed to explore the night sky"
This is just a misunderstanding. You may not know that you can explore much of the night sky with just a good pair of binoculars. Here is the list of objects in the night sky which you can see with just a pair of binoculars without having to buy a telescope:
1) Craters on the moon.
2) Moons of Jupiter.
3) Star clusters.
4) Andromeda galaxy as well as other bright galaxies.
5) Bright nebulae like Orion nebula.
Bonus: A link to the website that will help you explore the night sky:
Astronomy picture of the day:
The milky way as seen from the surface of the planet Mars
The Sun actually rotates around the Milky Way.
The Andromeda galaxy is growing nearer to the Milky way each second.One day,it will probably devour our beloved galaxy just like it did to many others.
Saturn:The 2nd biggest planet,yet the least dense one.If it was placed in an ocean big enough,it would actually float.
Scientists have come up with a few ultimate fates of the universe.
The Big Rip is when the universe keeps expanding and pulls everything apart.
The Big Crunch is when the universe stops expanding and starts shrinking in itself, merging all the galaxies together.
The Big Bounce is when the Big Crunch occurs but there will be another Big Bang afterwards.
The Heat Death of the Universe is when heat disappears and the universe becomes cold. There was another thing called the Big Freeze but I'm still not sure if it's the same as the Heat Death of the Universe.
Top 10 fabulous telescope targets for space lovers :
1) Orion nebula (In Orion constellation)
2) Lagoon nebula(In Sagittarius constellation)
3) Jupiter and its moons.
4) Craters and valleys on the Moon.
5)The Double Cluster (NGC 884 & NGC 869)
6)Andromeda galaxy (Also called M31)
7)The Beehive Cluster in Cancer constellation (M44
8)The Pleiades in Taurus constellation (M45)
9)Milky way galaxy (Silvery cloud stretching across the sky)
10)Saturn and its lovely rings.
Bonus: Great cluster in Hercules (In Hercules constellation)
The Grand Finale Toolkit
Why Cassini Matters For Media End of Mission Timeline Quick Facts What's Next
Artist's concept of Cassini diving between Saturn and its innermost ring.
Artist's concept of Cassini diving between Saturn and its innermost ring. › More
About the Mission
After two decades in space, NASA's Cassini spacecraft is nearing the end of its remarkable journey of exploration. Having expended almost every bit of the rocket propellant it carried to Saturn, operators are deliberately plunging Cassini into the planet to ensure Saturn's moons will remain pristine for future exploration—in particular, the ice-covered, ocean-bearing moon Enceladus, but also Titan, with its intriguing pre-biotic chemistry.
Beginning in 2010, Cassini began a seven-year mission extension in which it completed many moon flybys while observing seasonal changes on Saturn and Titan. The plan for this phase of the mission was to expend all of the spacecraft's propellant while exploring Saturn, ending with a plunge into the planet's atmosphere. In April 2017, Cassini was placed on an impact course that unfolded over five months of daring dives—a series of 22 orbits that each pass between the planet and its rings. Called the Grand Finale, this final phase of the mission has brought unparalleled observations of the planet and its rings from closer than ever before.
On Sept. 15, 2017, the spacecraft will make its final approach to the giant planet Saturn. But this encounter will be like no other. This time, Cassini will dive into the planet's atmosphere, sending science data for as long as its small thrusters can keep the spacecraft's antenna pointed at Earth. Soon after, Cassini will burn up and disintegrate like a meteor.
To its very end, Cassini is a mission of thrilling exploration. Launched on Oct. 15, 1997, the mission entered orbit around Saturn on June 30, 2004 (PDT), carrying the European Huygens probe.
Is it possible to count the stars?
It is possible for astronomers to guess how many stars there are, though. First, we can use physics to make a good guess about how many stars there are in our galaxy (about 100 billion). Then we can make a guess about how many galaxies there are in the visible universe (also about 100 billion). Then we just multiply these numbers together to estimate the number of stars in the visible universe - ten thousand billion billion stars!
You can see the satellites when sunlight reflects off of their solar panels or communications antennas, and sometimes satellites can be the brightest thing in the sky! A good place to find out when satellites are supposed to be visible at your location is Heavens-Above.Com
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