Measuring the Universe

Measuring the Universe from Royal Observatory Greenwich on Vimeo.

Stellar Parallax

An introduction to the concept of stellar parallax.

Note: This video is from the fantastic Khan Academy collection of educational videos.

Galactic Collisions

Note: This video is from the fantastic Khan Academy collection of educational videos.

Scale series #5: Intergalactic Scale

And our final installment in the scale series looks at the distances across and beyond whole galaxies!

Note: This video is from the fantastic Khan Academy collection of educational videos.

Scale series #4: Scale of the Galaxy

Next up in our scale series is our very own galaxy.

Note: This video is from the fantastic Khan Academy collection of educational videos.