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Results tagged with nebula
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user 2365
A collection of ionized gases and dust in interstellar space
13
votes
Accepted
Whose name is Minkowski 92 bearing?
Rudolf Minkowski.
Its not likely to be the mathematician, Hermann. Nor the physiologist Oskar. There's only one Minkowski who was an observational astronomer.
The paper describing M1-92 was https:/ …
- 129k
1
vote
Accepted
Is this gas cloud or lens effect?
This particular object I tracked down by comparing the visual with the infrared image of the sky. It was a little tricky because no very bright star appears at that location. But after making comparis …
- 129k
1
vote
Accepted
Do novas create a nebula? Could a planet survive if its star exploded in a nova?
Novae displaying nebula shells or remnants include: GK Per, RR Pic, DQ Her, FH Ser, V476 Cyg, V1974 Cyg, HR Del and V1500 Cyg. …
- 129k
45
votes
Accepted
When stars explode after running out of fuel, why are new stars born from the remnants?
This process forms a "planetary nebula" The outer layers are formed mostly of hydrogen and helium, but are enriched by other elements. Or stars can die as supernovae. These are much more energetic. …
- 129k
2
votes
Fusion of elements inside heavy stars
The heavier elements in the planetary nebula mix with the hydrogen and helium gas in outer space and can later go on to be found in new stars. … Some stars die in a supernova explosian, but most have a more peaceful death in a planetary nebula. …
- 129k
4
votes
Accepted
How do I see more than just points in the sky?
Dark Skies are your friend.
When Messier was searching for comets, it was before electric lighting and the nights were dark in a way that is rarely seen today.
Take a look at the Dark sky map, and t …
- 129k
9
votes
Distance of the Crab nebula and the speed of light
The distance to the crab nebula is uncertain. It is probably between
4900 and 8100 light years away, (with a best guess of 6500 light years). …
- 129k
3
votes
Accepted
What was the first nebulae of the first class?
Following the links on the Wikipedia page leads to Jones, K. G., “The search for the nebulae - VI.”, Journal of the British Astronomical Association, vol. 79, pp. 213–222, 1969., which identifies each …
- 129k
9
votes
What kind of nebula was the Sun formed from?
Of course you can't see the nebula that the sun formed from, it was turned into stars 4.6 billion years ago. It doesn't exist any more. …
- 129k
4
votes
Accepted
Long-lived supernova remnants?
Of the order 10000–100000 years. As an example of an old Supernova remnant, you can see the Vela SNR, estimated at 11,000–12,300 years old.
Nasa describes the evolution of a remnant
Initially, the sh …
- 129k
3
votes
The star that died and became the Crab Nebula and Crab Pulsar?
The crab nebula is more than 6000 light years away. Its progenitor was probably towards the lower end of stars that go supernova. …
- 129k