نوع مقاله : علمی- ترویجی

نویسندگان

1 استادیار، پژوهشگاه هوافضا، وزارت علوم تحقیقات و فناوری، تهران، ایران

2 دانش آموخته دکتری، دانشگاه پلی تکنیک مادرید، اسپانیا.

3 دانشجوی کارشناسی ارشد، پژوهشگاه هوافضا، وزارت علوم تحقیقات و فناوری، تهران، ایران

چکیده

مأموریت‌های فضایی سرنشین‌دار بخش اعظمی از سفرهای آیندة فضایی را به خود اختصاص می‌دهد. تشعشعات فضایی کمربندهای ون آلن یکی از چالش‌های مهم مأموریت‌های فضایی با رویکرد زیست-فضا است. فضاپیماها تحت نفوذ تشعشعات پرانرژی موجود در فضا قرار دارند که تأثیرات زیادی بر وسایل الکتریکی و محموله‌های آنها، به خصوص محموله‌های زیستی دارد. این امر نیاز به حفاظت تشعشعی یا کاهش اثر آن را دارد.به عنوان مثال، زمانی که گیاهان تحت تأثیر تنش تشعشعی قرار می‌گیرند، این تشعشعات تأثیر مخربی بر رشد آنها به علت آسیب دی ان ای می‌گذارد و منجر به کاهش رشد و تغییرات ژنتیکی آنها می‌شود. در این مقاله، به بررسی اثرات تشعشعی کمربندهای ون آلن بر موجودات زنده در سفرهای فضایی پرداخته می‌شود.

کلیدواژه‌ها

عنوان مقاله [English]

Van Allen Radiation Belts: An Important Challenge for Astrobiology Missions

نویسندگان [English]

  • Iman Shafieenejad 1
  • Sharareh Ghasemi 2
  • nadia noori 3

1 Assiatant Professor, Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran

2 Ph.D. Polytechnic University of Madrid, Spain.

3 M.Sc. Student. Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran.

چکیده [English]

Manned space missions account for a large proportion of future space travel missions.Van Allen radiation belts are major challenges of space missions with an astrobiology approach. In general, every living-being in space is affected by cosmic rays and solar charged particles. The amount of this radiation in two areas around the Earth, named Van Allen belts is significant. For example, planets exposed to radiation stress, due to DNA damage, has destructive effect on its growth, leading to reduced growth and genetic alteration. In this paper, effects of a Van Allen radiation belt on living organisms during space travel are investigated. 

کلیدواژه‌ها [English]

  • Space Missions
  • Van Allen Belts
  • Cosmic Radiation
  • Solar Radiation
  • Astrobiology
  • Bio-cargo
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