Galaxies

The total number of planets in the universe is unknown, but there are likely many billions, perhaps many with conditions similar to Earth.

More than 300 planets outside our solar system have been discovered. All are within our own Milky Way galaxy, because accurate observations of planet-sized masses in other galaxies is not currently possible. Theoretical extrapolations suggest that there are indeed planets around many stars in other galaxies as well.

The M87 is the largest galaxy within the Virgo cluster.

It has a diameter of approximately 120,000 light years. The Milky Way Galaxy is a mere 100,000 light years.

The Earth for comparison has a diameter of 0.0645 light seconds.

starwars

Andromeda

A supernova (massive explosion triggered by a number of different fashions) causes the "brilliant flash of light", this then results in a status change of the star which can become a neutron star or black hole (through gravitational collapse) or alternatively when a white dwarf accumulates enough mass it can undergo a runaway nuclear fission event which cause it to go supernova.

The Butterfly Nebula or (Twin Jet, M2-9) has a radius of about 0.7 light years

The stars that make up the Constellations (Osiris which we call Orion now is no exception) are all within the Milky Way galaxy. The relative positions of stars changes over great time scales but since the Egyptians named Osiris to our day the changes have been barely noticeable. That goes for the position of the Milky Way in the sky too.

quasar

The Whirlpool Galaxy or M51 has a diameter of approximately 76,000 light years.

no Bkuz comets arnt used as mirrors.

Ignore that. Yes, comets shine due to reflected light because they do not produce their own light, much as our moon reflects light from the sun causing it to shine in the sky.

You could ask someone with relevent knowledge like a shop keeper who sell galaxy bars

Castor is a variable star and also a quadruple star system, and has a spectral class of A1/A2 giving it a colour of white to white blue.

See link for more information

When hydrogen is fused into helium within the sun, it gives off enormous amounts of heat, thus emitting infared radiation.

The Boötes constellation has 59 named stars under the Flamsteed designation, 13 more under the Bayer designation and 82 unnamed stars.

Arcturus (Third brightest in the night sky) is the brightest star. while Wolf 498 is the nearest at around 17.7 light years.

About 2 minutes through a wormhole - you turn left at Betelgeuse and then take a right at Sirius.

The sun belongs to the milky way.

Sirius is a binary star.

Sirius A has a spectral type of A1V and will appear on the HR in the top left corner.

Sirius B has a spectral type of DA2 and will appear on the HR in the bottom left corner as a white dwarf.

Zubeneschamali, Zuben Eschamali, Zuben el Chamali, Zubenesch, Zubenelg, Kiffa Borealis, Lanx Australisα2 Libα291308417262214h 50m 52.78s−16° 02′ 29.8″2.750.8877A3IVZubenelgenubi, Zuben Elgenubi, Kiffa Australis, Elkhiffa australisσ Libσ201332167371415h 04m 04.26s−25° 16′ 54.7″3.25−1.51292M3/M4IIIpreviously γ Scorpii; Brachium, Cornu, Zuben el Genubi, Zuben Hakrabi, Ankaaυ Libυ391390637647015h 37m 01.46s−28° 08′ 06.3″3.60−0.28195K3IIIDerakrab Borealis, Deracrab Borealis, Dhira al Akrabτ Libτ401393657660015h 38m 39.38s−29° 46′ 39.7″3.66−2.01445B2.5VDerakrab Australis, Deracrab Australis, Dhira al Akrabγ Libγ381389057633315h 35m 31.54s−14° 47′ 22.4″3.910.56152K0IIIZuben Elakrab, Zuben (el) Hakrabi, Zuben Hakraki

That will obviously depend on the speed. Look up the distance to this galaxy in light-years. The equivalent number of years (i.e., the same number, just replacing "light-years" with "years") is what you would take to get there moving at the speed of light. If you move at a slower speed, it will of course take longer. For example, at 1/10 of the speed of light it would take 10 times as long. The above calculation doesn't take into account time dilation, i.e., how much time would elapse for the traveller.

The Boötes Dwarf Galaxy is a dwarf spheroidal galaxy which appears to be tidally disrupted by our own Milky Way.

It lies about 197,000 light years away in the Bootes constellation

Supernova. There are Chinese and European accounts from centuries ago of "guest stars," new stars that appeared and faded from view. We can see the expanding remnants of those supernova today--one is the Crab Nebula.

Depending on the planets positions at the time and if you are lucky with your trajectory.

* Mars * Jupiter * Saturn * Uranus * Neptune * and then nothing for a long long time

Most galaxies just fly around at varying speeds, but sometimes they collide, and when that happens, it means that all of the stars and planets within one galaxy clash with the others. The explosion and aftereffects that ensue, are, well, astronomic. Most of the planets and stars would crash into each other and become big balls of hot gas and magma, and some of them would combine, some of them would fly around and be shot into space due to the massive amounts of opposing gravity amassing. As for the cores of the galaxies, the Super Massive Black Holes, they would suck up anything that they could find, and eventually crash into each other. I actually don't know what would happen when Super Massive Black Holes collide, but I'm sure you can use your imagination for that. ;)

*Most of this stuff is theoretical, because us humans haven't been out there to see and experience it for ourselves.

Yes they can