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We have had a zombie star before, though never called that. I tried "reply with quote" but after 20 minutes spinning I gave up. It seems the new slower LitNet internet connection can't handle this.
Now a bit more about the star of the day the "zombie star":
http://www.astronomy.com/news/2017/11/zombie
I see. Yes, it would have to be prepared before the happening of the phenomena you want to watch.Quote:
Originally Posted by Dreamwoven
Never mind, DW.Quote:
Originally Posted by Dreamwoven
Seems the solar system has got a visitor:
Update on `Oumuamua, Our First Interstellar Object
"When the first-known object from interstellar space slipped through the inner solar system last month, the welcoming party wasn't quite ready. It passed within 0.25 astronomical unit (37,600,000 km) of the Sun on September 9th — yet it wasn't discovered until October 25th."
http://www.skyandtelescope.com/astro...ject-oumuamua/
We also live in a small house, don't have space for a stepladder to stand in the living room.
http://www.astronomytoday.com/astronomy/asteroids.html
This is a helpful article on asteroids.
Yes, I see.Quote:
Originally Posted by Dreamwoven
Sure. Their existence, variety and composition is attracting attention.Quote:
Originally Posted by Dreamwoven
Asteroids: the rocky debris of space
"Historically, asteroids have given us clues as to how our solar system was formed. According to a popular theory, the four inner planets were formed when asteroids of different sizes all clumped together and over time became round, forming Mercury, Venus, Earth and Mars. Beyond that, many astronomers hypothesize that all or most of the asteroids making up the contents of the asteroid belt were actually all a part of a planet � probably rocky � that was ripped apart due to the gravitational effects of Jupiter (yes, it's that strong!). In our day-to-day world, asteroids inspire both awe and fear."
http://www.astronomytoday.com/astronomy/asteroids.html
China seems to be forging ahead: see http://www.skyandtelescope.com/astro...coming-months/.
Acing Man has today published a post on how China is doing well with its own research. Worth reading...http://www.acting-man.com
Very interesting articles, DW, from the astronomical as well as from the political point of view. It´s certainly no coincidence that they appear after the US president´s visit to China. China indeed forges ahead, without calling to much attention on its conquests.Quote:
Originally Posted by Dreamwoven
China seems to be forging ahead: see http://www.skyandtelescope.com/astro...coming-months/.
Acing Man has today published a post on how China is doing well with its own research. Worth reading...http://www.acting-man.com
https://www.universetoday.com/137856...eptunes-moons/
This was an interesting article. They argue that Triton became a moon of Neptune by being caught in its orbit, and Triton is bigger than the rest of the moons of Neptune combined, and is caught in retrograde motion:
"The study of the Solar System’s many moons has revealed a wealth of information over the past few decades. These include the moons of Jupiter – 69 of which have been identified and named – Saturn (which has 62) and Uranus (27). In all three cases, the satellites that orbit these gas giants have prograde, low-inclination orbits. However, within the Neptunian system, astronomers noted that the situation was quite different.
Compared to the other gas giants, Neptune has far fewer satellites, and most of the system’s mass is concentrated within a single satellite that is believed to have been captured (i.e. Triton). According to a new study by a team from the Weizmann Institute of Science in Israel and the Southwest Research Institute (SwRI) in Boulder, Colorado, Neptune may have once had a more massive systems of satellites, which the arrival of Triton may have disrupted.
The study, titled “Triton’s Evolution with a Primordial Neptunian Satellite System“, recently appeared in The Astrophysical Journal. The research team consisted of Raluca Rufu, an astrophysicist and geophysicist from the Weizmann Institute, and Robin M. Canup – the Associate VP of the SwRI. Together, they considered models of a primordial Neptunian system, and how it may have changed thanks to the arrival of Triton."
Discoveries increase almost on a daily basis, I feel. But it probably will take a lot of time until they are able to systematize this new knowledge.
I agree with that cautious view. Until then, this remains only a theory.
https://www.universetoday.com/137872...nd-quiet-star/
There are lots of these near our solar system. Still a long way away, though...