D. Finding technosignatures is more difficult than discovering biosignatures. How does the article define an exoplanet? A. A planet that sits far beyond our own solar system. B. A planet that is likely to show evidence of life forms. ...
“This is really exciting, because we are able to regularly sample the density over a very long stretch of space, the longest stretch of space that we have so far,” said Ocker. “This provides us with the most complete map of the density and the interstellar medium as seen by Voyager....
C.Discovering ancient cities hidden beneath the ground.D.Reporting on recent studies of historical ruins. 2. What is mentioned about the robot used in the project? A.It may cause further damage to artworks.B.It takes more time to the examine the artworks. ...