"The outer solar system probably does not contain a large gas giant planet ('Planet X'), or a small, companion star ('Nemesis')," concluded University of Pennsylvania astronomer Kevin Luhman, who directed the study using NASA's Wide-field Infrared Survey Explorer (WISE) telescope.
"ລະບົບການແສງຕາເວັນນອກອາດຈະບໍ່ໄດ້ປະກອບດ້ວຍອາຍແກັສຂະຫນາດໃຫຍ່ດາວຍັກໃຫຍ່ ("ດາວ X"), ຫຼືຂະຫນາດນ້ອຍ, ດາວ companion ("Nemesis")," ສະຫຼຸບ University of Pennsylvania ນັກດາລາສາດ Kevin Luhman, ຜູ້ທີ່ມຸ້ງການສຶກສາການນໍາໃຊ້ຂອງອົງການ NASA ກ້ວາງ, ພາກສະຫນາມ Infrared ສໍາຫຼວດ Explorer (WISE) telescope.