Astronomy | Astrophysics Answers

does milky way galaxy have any intergalactic star ?

Theoretically speaking, could a wormhole in the Milky Way transport us to another region in the Milky Way? Or would we more likely be blasted to who knows where?

Hello. Theoretically speaking, could a black hole in the Milky Way transport us to another region in the Milky Way? Or would we more likely be blasted to who knows where? This is for a story I'm writing so I hope that transportation within the Milky Way is theoretically possible. Thank you for your time.

What are the names of the following three well-known constellations?

A jet airliner flies at a constant speed, covering 401 miles in 1.8 hours. What is the speed of the plane in miles per hour?

if we assume that singularity existed. then how long could have been existed before the big bang?

if we assume that singulary existed then how long singularity have existed before the big bang

I read that the full moon assisted in releasing the ship in the Suez Canal by causing higher than normal tides. Aren't tides influenced by the moon's gravity and not what phase the moon is in? Even when there is a new moon and it's not visible, it's still there and it's gravity affects the tides. I know that it orbits closer and farther from the earth which would affect tides, but do these variations coincide with the phases?

A galaxy cluster of mass 3.0 × 1013M⊙ with known distance of 20 Mpc is observed in the centre of a bright ring, which is presumably a lensed galaxy. The angular radius of the ring from the cluster is 1.13 arcmin. The ring is observed to have a redshift of 0.0075. Assuming a value of 70kms−1Mpc−1 for the Hubble constant, determine whether the ring’s redshift distance is consistent at an accuracy of ~5% to the distance expected for the lensed galaxy to actually be located directly behind the cluster.

Equations: a = 4GM/bc^2

V=H0d