In which order would events appear on a timeline based
on the details in the excerpt?
O
Read the excerpt from A Black Hole Is NOT a Hole by
Carolyn Cinami DeCristofano.
Most of the time gravity seems to work the way Newton
described it. Newton's rules explain a lot, from falling
apples to most planets' orbits. But his laws don't work
perfectly. In high-gravity zones, Newton's ideas don't jibe
with what scientists observe. For example, Mercury's orbit
--up close to the Sun-has a blip in it that Newton's laws
can't explain.
Glitches like this one were the reason Einstein worked so
hard at coming up with a new explanation. He wanted to
account for everything. His ideas about curving space may
sound bizarre, but they work! They took care of the gaps in
Newton's theory and explained Mercury's orbit. They led
scientists to predict shifting starlight and black holes. All of
this is powerful evidence that Einstein was on to
something.
1. Newton developed his laws of gravity.
2. Scientists predicted black holes.
3. Einstein developed his explanation of gravity.
1. Scientists predicted black holes.
2. Newton developed his laws of gravity.
3. Einstein developed his explanation of gravity.
1. Newton developed his laws of gravity.
2. Einstein developed his explanation of gravity.
3. Scientists predicted black holes.
1. Einstein developed his explanation of gravity.
2. Newton developed his laws of gravity.
3. Scientists predicted black holes.
O