One benefit of presenting information in a video rather than in text is that a video can

The first person to map the Milky Way Galaxy using radio waves was

What information could a video of an exploding star provide that a text could not?

Ricardo read this excerpt from A Black Hole Is NOT a Hole by Carolyn Cinami DeCristofano.

Discoveries of black holes exploded in the late 1900s and early 2000s. What scientists found reads like a cast of characters for a mixed-up fairy tale. First they discovered the small (“Baby Bear”) black holes, then the giant “Papas.” But where were the medium “Mama Bear” black holes? It just didn’t make sense that there would be smalls and larges but no mediums. Astronomers began the search, and found them. There’s just one size that still hasn’t been found, even though it has been predicted. The tiniest of all, the “Tom Thumbs” of the black-hole world, have yet to be discovered—if they even exist.

After reading the excerpt, Ricardo made a text-to-text connection. Which example is a text-to-text connection?

Before watching a video about black holes, it is important to

In the 1930s, Grote Reber became known for

Read this excerpt from A Black Hole Is NOT a Hole by Carolyn Cinami DeCristofano.

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.

Reber mapped these signals from the sky and shared his findings. Astronomers followed up with new investigations and soon began reporting more signals. Over time, with better radio telescopes, they found that some radio sources appeared as paired patches, one on either side of a tiny dot. They called these sources “radio galaxies.” They also discovered other, more starlike sources—intense dots of radio energy without patches. How strange. What could these quasars (short for “quasi-stellar radio sources”) be? Were they related to the radio galaxies?

According to the excerpt, how did astronomers use Reber’s findings to add to the knowledge of black holes?

Which pair of sentences best describes a scientific discovery in A Black Hole Is NOT a Hole by Carolyn Cinami DeCristofano?

The discovery of supermassive black holes began with the discovery of

Why were astronomers interested in studying radio waves in the 1980s and 1990s?