Zoom in on the Andromeda Galaxy with Hubble. What looks like a smudge of light to the unaided eye is actually a vast galaxy containing an estimated 1 trillion stars.

Credit: ESA/Hubble & NASA

@wonderofscience ...on a collision course with our own Milky Way, as I recall.

@wonderofscience In case anyone's wondering why the Hubble telescope is named that, Edwin Hubble definitively proved that there are other galaxies beyond the Milky Way -- in 1923.

We've only known for certain that Milky Way wasn't the only galaxy -- we've only known that there was a universe beyond our own cluster of stars -- for the past hundred years.

1923.

@wonderofscience Ever wonder why there wasn't much space opera science fiction before the 20th century? Because humans literally didn't know that there was a ginormous universe for Captain Kirk to explore until the 20th century.
@wonderofscience Go ahead. Tell me again how important we are here on earth. 😏

@wonderofscience

This kinda spoils the best part of Andromeda in the sky.

The first photo of Andromeda caused the science team seeing it to call it the Andromeda Nebulae.

Because it is huge. Not huge as in a trillion stars, but huge in the actual sky. Other than the moon, no one had seen anything but dots in the sky.

Andromeda IS CLOSE. The galaxy pictured, is ten times bigger than the moon is in the sky.

If dust did not dim Andromeda, it would appear like this.

@wonderofscience We're apes on a speck of dust throwing our poop at each other.
@wonderofscience it's like a Mandelbrot zoom, or part of the title sequence of "Contact" in reverse.
@wonderofscience Thank you so much for posting this sledgehammer reminder that we are utterly insignificant.