Nửa đường tới “hành tinh lùn” đầy bí ẩnNew Horizons, tàu thăm dò khảo sát không gian bay nhanh nhất của NASA. (Ảnh: spacetoday.org)
ơ quan Hàng không vũ trụ Mỹ (NASA) ngày 1/3 cho biết, tàu vũ trụ New Horizons thăm dò sao Diêm vương (“hành tinh lùn”) của Mỹ đã bay được 2,39 tỷ km xuyên ngang hệ Mặt trời, hoàn tất một nửa quãng đường từ Trái đất đến sao Diêm vương. Tàu vũ trụ này được phóng lên từ năm 2006 và dự kiến sẽ đến vị trí của sao Diêm vương trên quỹ đạo của nó vào năm 2015. Tháng 4 tới, tàu vũ trụ này sẽ vượt qua quỹ đạo của sao Thiên vương thuộc hệ Mặt trời.
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