Pallas, m\u1ed9t trong nh\u1eefng ti\u1ec3u h\u00e0nh tinh kh\u00e9t ti\u1ebfng nh\u1ea5t trong h\u1ec7 m\u1eb7t tr\u1eddi c\u1ee7a ch\u00fang ta, \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc ghi l\u1ea1i v\u1edbi \u0111\u1ed9 chi ti\u1ebft \u0111\u00e1ng kinh ng\u1ea1c b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb SPHERE tr\u00ean K\u00ednh vi\u1ec5n v\u1ecdng r\u1ea5t l\u1edbn c\u1ee7a \u0110\u00e0i quan s\u00e1t Nam \u00c2u. Nh\u1eefng h\u00ecnh \u1ea3nh n\u00e0y cho th\u1ea5y m\u1ed9t c\u1ea3nh t\u01b0\u1ee3ng \u0111\u00e1ng ch\u00fa \u00fd: Pallas l\u00e0 thi\u00ean th\u1ec3 c\u00f3 nhi\u1ec1u h\u1ed1 va\u0323ch nh\u1ea5t trong v\u00e0nh \u0111ai ti\u1ec3u h\u00e0nh tinh, danh hi\u1ec7u c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c sau v\u00f4 s\u1ed1 v\u1ee5 va ch\u1ea1m v\u1edbi c\u00e1c thi\u00ean th\u1ec3 l\u00e2n c\u1eadn.<\/p>\n\n
“Nh\u1eefng h\u00ecnh \u1ea3nh chi ti\u1ebft \u0111\u1ea7u ti\u00ean v\u1ec1 Pallas cho th\u1ea5y r\u1eb1ng ti\u1ec3u h\u00e0nh tinh n\u00e0y \u0111\u00e3 c\u00f3 m\u1ed9t qu\u00e1 kh\u1ee9 d\u1eef d\u1ed9i”, Franck Marchis, nh\u00e0 khoa h\u1ecdc h\u00e0nh tinh t\u1ea1i MIT v\u00e0 l\u00e0 \u0111\u1ed3ng t\u00e1c gi\u1ea3 c\u1ee7a m\u1ed9t nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean Nature Astronomy cho bi\u1ebft.<\/p>\n\n
Trong khi h\u1ea7u h\u1ebft c\u00e1c ti\u1ec3u h\u00e0nh tinh trong v\u00e0nh \u0111ai di chuy\u1ec3n theo m\u1ed9t \u0111\u01b0\u1eddng t\u01b0\u01a1ng t\u1ef1 quanh M\u1eb7t tr\u1eddi, Pallas l\u1ea1i c\u00f3 c\u00e1ch ti\u1ebfp c\u1eadn b\u1ea5t th\u01b0\u1eddng h\u01a1n. Qu\u1ef9 \u0111\u1ea1o nghi\u00eang c\u1ee7a n\u00f3 khi\u1ebfn n\u00f3 \u0111\u00e2m xuy\u00ean v\u00e0nh \u0111ai \u1edf m\u1ed9t g\u00f3c kh\u00f3 x\u1eed, l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng va ch\u1ea1m.<\/p>\n\n
“Pallas h\u1ee9ng ch\u1ecbu nhi\u1ec1u v\u1ee5 va ch\u1ea1m g\u1ea5p hai ho\u1eb7c ba l\u1ea7n so v\u1edbi Ceres ho\u1eb7c Vesta”, hai thi\u00ean th\u1ec3 l\u1edbn nh\u1ea5t trong v\u00e0nh \u0111ai ti\u1ec3u h\u00e0nh tinh, Micha\u00ebl Marsset, nh\u00e0 khoa h\u1ecdc h\u00e0nh tinh t\u1ea1i MIT v\u00e0 l\u00e0 \u0111\u1ed3ng t\u00e1c gi\u1ea3 c\u1ee7a nghi\u00ean c\u1ee9u, cho bi\u1ebft.<\/p>\n\n
S\u1ef1 b\u1eafn ph\u00e1 li\u00ean t\u1ee5c \u0111\u00e3 khi\u1ebfn Pallas tr\u1edf n\u00ean chi ch\u00edt c\u00e1c h\u1ed1 va\u0323ch, khi\u1ebfn n\u00f3 c\u00f3 bi\u1ec7t danh l\u00e0 “ti\u1ec3u h\u00e0nh tinh gi\u1ed1ng qu\u1ea3 b\u00f3ng g\u00f4n”. M\u1ed9t ph\u00e2n t\u00edch c\u00e1c h\u00ecnh \u1ea3nh do SPHERE ch\u1ee5p cho th\u1ea5y c\u00e1c h\u1ed1 va\u0323ch chi\u1ebfm \u00edt nh\u1ea5t 10% b\u1ec1 m\u1eb7t c\u1ee7a ti\u1ec3u h\u00e0nh tinh.<\/p>\n\n
Nh\u1eefng v\u1ee5 va ch\u1ea1m m\u00e0 Pallas ph\u1ea3i h\u1ee9ng ch\u1ecbu \u0111\u1eb7c bi\u1ec7t nghi\u00eam tr\u1ecdng. C\u00e1c m\u00f4 ph\u1ecfng m\u00e1y t\u00ednh cho th\u1ea5y c\u00e1c v\u1eadt th\u1ec3 va ch\u1ea1m g\u00e2y ra c\u00e1c h\u1ed1 va\u0323ch \u0111\u00e3 di chuy\u1ec3n v\u1edbi t\u1ed1c \u0111\u1ed9 h\u01a1n 25.000 d\u1eb7m\/gi\u1edd, nhanh g\u1ea5p \u0111\u00f4i so v\u1edbi t\u1ed1c \u0111\u1ed9 \u0111i\u1ec3n h\u00ecnh c\u1ee7a c\u00e1c v\u1ee5 va ch\u1ea1m trong v\u00e0nh \u0111ai ti\u1ec3u h\u00e0nh tinh.<\/p>\n\n
\u00cdt nh\u1ea5t 36 trong s\u1ed1 c\u00e1c v\u1ebft l\u00f5m tr\u00ean Pallas c\u00f3 \u0111\u01b0\u1eddng k\u00ednh \u00edt nh\u1ea5t 18 d\u1eb7m, bao g\u1ed3m c\u1ea3 m\u1ed9t h\u1ed1 va\u0323ch kh\u1ed5ng l\u1ed3 tr\u1ea3i d\u00e0i 250 d\u1eb7m. H\u1ed1 va\u0323ch n\u00e0y c\u00f3 th\u1ec3 l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a m\u1ed9t v\u1ee5 va ch\u1ea1m v\u1edbi m\u1ed9t v\u1eadt th\u1ec3 c\u00f3 chi\u1ec1u r\u1ed9ng l\u00ean t\u1edbi 25 d\u1eb7m.<\/p>\n\n
V\u1ee5 va ch\u1ea1m t\u1ea1o ra h\u1ed1 va\u0323ch n\u00e0y c\u0169ng c\u00f3 th\u1ec3 ch\u1ecbu tr\u00e1ch nhi\u1ec7m cho nh\u00f3m c\u00e1c v\u1eadt th\u1ec3 nh\u1ecf h\u01a1n \u0111i theo Pallas. Sau khi \u0111\u00e2m v\u00e0o ti\u1ec3u h\u00e0nh tinh c\u00e1ch \u0111\u00e2y kho\u1ea3ng 1,7 t\u1ef7 n\u0103m, v\u1eadt th\u1ec3 va ch\u1ea1m c\u00f3 th\u1ec3 \u0111\u00e3 v\u1ee1 th\u00e0nh nhi\u1ec1u m\u1ea3nh tr\u00f4i d\u1ea1t trong kh\u00f4ng gian v\u00e0 gi\u1edd theo sau h\u00e0nh tinh m\u1eb9 c\u1ee7a ch\u00fang.<\/p>\n\n
“V\u00ec gi\u1edd \u0111\u00e2y ch\u00fang ta c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c ti\u1ec3u h\u00e0nh tinh l\u1edbn trong v\u00e0nh \u0111ai ch\u00ednh, ch\u00fang ta \u0111\u00e3 c\u00f3 quy\u1ec1n truy c\u1eadp v\u00e0o m\u1ed9t cu\u1ed1n s\u00e1ch h\u01b0 c\u1ea5u v\u1ec1 l\u1ecbch s\u1eed h\u1ec7 m\u1eb7t tr\u1eddi c\u1ee7a m\u00ecnh”, Marsset cho bi\u1ebft. “Ch\u00fang ta \u0111ang trong qu\u00e1 tr\u00ecnh h\u1ecdc c\u00e1ch \u0111\u1ecdc n\u00f3 v\u00e0 m\u1ed7i trang \u0111\u1ec1u mang \u0111\u1ebfn cho ch\u00fang ta m\u1ed9t b\u1ea5t ng\u1edd, trong \u0111\u00f3 c\u00f3 c\u1ea3 Pallas”.<\/p>\n\n
B\u1eb1ng c\u00e1ch nghi\u00ean c\u1ee9u Pallas v\u00e0 c\u00e1c ti\u1ec3u h\u00e0nh tinh kh\u00e1c, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111ang hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 nh\u1eefng ng\u00e0y \u0111\u1ea7u h\u1ed7n lo\u1ea1n v\u00e0 d\u1eef d\u1ed9i c\u1ee7a h\u1ec7 m\u1eb7t tr\u1eddi. Nh\u1eefng thi\u00ean th\u1ec3 n\u00e0y n\u1eafm gi\u1eef nh\u1eefng manh m\u1ed1i v\u1ec1 c\u00e1c qu\u00e1 tr\u00ecnh \u0111\u00e3 \u0111\u1ecbnh h\u00ecnh h\u00e0nh tinh c\u1ee7a ch\u00fang ta v\u00e0 nh\u1eefng m\u1ed1i nguy hi\u1ec3m ti\u1ec1m t\u00e0ng v\u1eabn t\u1ed3n t\u1ea1i trong kh\u00f4ng gian.<\/p>","protected":false},"excerpt":{"rendered":"
Pallas: Thi\u00ean th\u1ec3 c\u00f3 nhi\u1ec1u h\u1ed1 va\u0323ch nh\u1ea5t trong v\u00e0nh \u0111ai ti\u1ec3u h\u00e0nh tinh Ti\u1ebft l\u1ed9 qu\u00e1 kh\u1ee9 d\u1eef d\u1ed9i Pallas, m\u1ed9t trong nh\u1eefng ti\u1ec3u h\u00e0nh tinh kh\u00e9t ti\u1ebfng nh\u1ea5t…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[437],"tags":[17017,1173,97,1232,473,17019,435,6166,17018],"class_list":["post-12594","post","type-post","status-publish","format-standard","hentry","category-astronomy","tag-crater","tag-solar-system","tag-science","tag-space","tag-nasa","tag-pallas","tag-astronomy","tag-asteroid","tag-golf-ball-asteroid"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/12594","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=12594"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/12594\/revisions"}],"predecessor-version":[{"id":12595,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/12594\/revisions\/12595"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=12594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=12594"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=12594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}