What the ex­perts say…

All About Space - - Launch Pad -

“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

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