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Gotta Be Gravity!

from Dr G Goes To Space! by Dr G

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lyrics

If I were to drop two objects from my hands
One heavy and one light – which would be the first to land?
If you said the same time, then I think you understand
But what could it be? It’s gotta be gravity!

Gravity is the property that causes objects to attract
With the strength of their pull in proportion to their mass
The distance between them squared? It’s inversely proportional to that!
What could it be? It’s gotta be gravity!

If you were in a rocket, accelerating at a certain rate
You couldn’t tell if it was gravity in a stationary state!


It’s gotta be gravity
Objects are pulling me
I’m pulling them microscopically
What? It’s gotta be gravity!

It’s gotta be gravity
Forming the galaxies
Shaping their trajectories
What? It’s gotta be gravity!

The story goes, the apple fell on Newton’s head
Then Albert Einstein changed the paradigm again
Found that gravitation results from spacetime being bent!
They’re asking what could it be? It’s gotta be gravity

What if instead of being linear, space and tine are curved
Then very massive objects like the Sun or the Earth
Bend spacetime itself so straight lines seem to swerve
What could it be? It’s gotta be gravity!

Here’s an analogy to help to explain:
Think of a bowling ball sitting on a four-dimensional plane!

So if I were to drop two objects from my hands
They would move as the curvature of spacetime demands
A curious phenomenon we don’t fully understand
And what could it be? It’s gotta be gravity!

credits

from Dr G Goes To Space!, released June 26, 2019
Mixed and mastered by Pete MacDonald
Lyrics and music by Greg Melchin

Dr G: vocals, theremin, bass, guitar, programming

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Dr G Halifax Regional Municipality, Nova Scotia

Dr G is a theremin-playing space geek on a mission to spread the word about science! Merging hooky new wave beats with lyrics explaining science and the natural universe – think Talking Heads fronted by Bill Nye the Science Guy – Dr G creates a sound that is utterly unique, and as educational as it is infectious. ... more

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