Question

This excerpt makes a connection between

O
O
Read this excerpt from A Black Hole Is NOT a Hole.
Reber had just one little problem. To explore the radio
energy, he needed a radio telescope-a telescope that
could detect invisible radio energy-but there was no such
thing at the time. So he invented one. He built it in his
backyard in Wheaton, Illinois. Late into the night, Reber
probed the sky with his new telescope, using it to locate
the source of the mysterious radio energy.
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scientist Karl Jansky and scientist Grote Reber.
the invention of a radio telescope and the discovery of a
black hole.
the discovery of radio energy from space and the
discovery of a black hole.
the discovery of radio energy from space and the
invention of a radio telescope.
O

Answer 1

Answer:D

Explanation:Trust Me

Answer 2

D. the discovery of radio energy from space and the invention of a radio telescope

Step-by-step explanation: