دونالد إي. براونلي (Arabic Wikipedia)

Analysis of information sources in references of the Wikipedia article "دونالد إي. براونلي" in Arabic language version.

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gazzetta.it

Matt Williams (29 يوليو 2020). "Beyond "Fermi's Paradox" IV: What is the Rare Earth Hypothesis?" (PDF). Universe Today. مؤرشف من الأصل في 2020-11-28. اطلع عليه بتاريخ 2021-06-06. Origins: The term "Rare Earth" takes its name from the book Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), by Peter Ward and Donald E. Brownlee ... As the authors describe it, the Rare Earth argument comes down to two central hypotheses ... making Earth a very special place

https://meteoritical.org/awards/leonard-medalists. {{استشهاد ويب}}: |url= بحاجة لعنوان (مساعدة) والوسيط |title= غير موجود أو فارغ (من ويكي بيانات) (مساعدة)

https://www.lpi.usra.edu/science/staff/register/. اطلع عليه بتاريخ 2022-10-13. {{استشهاد ويب}}: |url= بحاجة لعنوان (مساعدة) والوسيط |title= غير موجود أو فارغ (من ويكي بيانات) (مساعدة)

Matt Williams (29 يوليو 2020). "Beyond "Fermi's Paradox" IV: What is the Rare Earth Hypothesis?" (PDF). Universe Today. مؤرشف من الأصل في 2020-11-28. اطلع عليه بتاريخ 2021-06-06. Origins: The term "Rare Earth" takes its name from the book Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), by Peter Ward and Donald E. Brownlee ... As the authors describe it, the Rare Earth argument comes down to two central hypotheses ... making Earth a very special place