גיל היקום – הבדלי גרסאות

הערכותההערכות אחרונות מה־[[22 במרץ]] [[2013]]האחרונות קובעות שגיל היקום הוא '''<math>13.798 \pm 0.037</math> מיליארד [[שנים]]'''.<ref>{{cite journal | arxiv=1303.5062 | title=Planck 2013 results. I. Overview of products and scientific results | author=Planck collaboration | journal=Submitted to Astronomy & Astrophysics | year=2013}}</ref><ref>{{cite journal |last=Bennett |first=C.L. |last2=Larson |first2=L.|last3=Weiland |first3=J.L. |last4=Jarosk |first4= N. |last5=Hinshaw |first5=N. |last6=Odegard|first6=N. |last7=Smith |first7=K.M. |last8=Hill |first8=R.S. |last9=Gold |first9=B.|last10=Halpern |first10=M. |last11=Komatsu |first11=E. |last12=Nolta |first12=M.R.|last13=Page |first13=L. |last114=Spergel |first14=D.N. |last15=Wollack |first15=E.|last16=Dunkley |first16=J. |last17=Kogut |first17=A. |last18=Limon |first18=M. |last19=Meyer|first19=S.S. |last20=Tucker |first20=G.S. |last21=Wright |first21=E.L. |title=Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results|url=http://arxiv.org/abs/1212.5225 |arxiv=1212.5225 |date=December 20, 2012|accessdate=January 1, 2013 }}</ref><ref>[[Short scale]] usage, i.e., 13.798 thousand million.</ref>