Carl Sagan was a professor at the university from 1968 to 1996.

"Carl Sagan was probably the only astronomer that had any name recognition."

Carl Sagan was among the first group of fellows in the program.

As part of his global role in environmental matters, he has linked up scientists like Carl Sagan with religious leaders.

Carl Sagan, among others, has pointed out important design deficiencies for such a goal in the large manned station.

I wish Carl Sagan were alive to see some of those pictures.

The force behind this sound experiment was Carl Sagan, the astronomer, who died nearly two years ago.

The late Carl Sagan served as editor of the journal from 1968 to 1979.

Carl Sagan's one of the people in that group, isn't he?

One could call him the Carl Sagan of the deep.

Carl Sagan was a professor at the university from 1968 to 1996.

"Carl Sagan was probably the only astronomer that had any name recognition."

Carl Sagan was among the first group of fellows in the program.

As part of his global role in environmental matters, he has linked up scientists like Carl Sagan with religious leaders.

Carl Sagan, among others, has pointed out important design deficiencies for such a goal in the large manned station.

I wish Carl Sagan were alive to see some of those pictures.

The force behind this sound experiment was Carl Sagan, the astronomer, who died nearly two years ago.

The late Carl Sagan served as editor of the journal from 1968 to 1979.

Carl Sagan's one of the people in that group, isn't he?

One could call him the Carl Sagan of the deep.