What the experts say…
“It is unlikely that we’ll be able to see any earlier into the history of stars in our lifetimes. This project shows that a promising new technique can work and has paved the way for decades of new astrophysical discoveries."
Judd Bowman, Arizona State University School of Earth and Science Exploration
“The unexpected depth of 21cm absorption is exciting because it should make spatial fluctuations in this signal easier to observe. These fluctuations can tell us about variations in density in the early universe, which seed the formation of cosmic structure.”
Andrew Robertson, Institute for Computational Cosmology, Durham University
“This surprising signal indicates the presence of two actors: the first stars, and dark matter. The first stars in the universe turned on the radio signal, while the dark matter collided with the ordinary matter and cooled it down. Extra-cold material explains the strong radio signal."
Rennan Barkana, Raymond & Beverly Sackler Faculty of Exact Sciences, Tel Aviv University
“Larger instruments are under construction that will be able to map this signal in greater detail, but those other experiments were conceived before knowing for sure if a detection could ever be made. This discovery gives them a specific signal to look for."
Peter Kurczynski, Advanced Technologies and Instrumentation, National Science Foundation