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Interstellar space travel is manned or unmanned travel between stars. Interstellar travel is much more difficult than interplanetary travel: the distances between …2668
On our channel a lot of interesting documentaries on such themes: to destroy the Land, kill the Earth, end of Earth, the death Land, death Land, doomsday, …11391
Welcome to the first episode of Crash Course Astronomy. Your host for this intergalactic adventure is the Bad Astronomer himself, Phil Plait. We begin with …732
Năm 1801 nhà khoa học người Đức Johann Wilhelm Ritter , sau khi nghe tin về sự phát hiện ra tia hồng ngoại năm 1800, đã dự đoán rằng có một loại tia nào…221
An army of high-tech telescopes, led by Hubble in space, has delivered an unprecedented chain of discoveries about how galaxies took shape, how stars live …3001
Extraordinary Islamic astronomy by 9th century Syrian astronomer Al- Battani. Through his observations from earlier Greek texts which stated that the earth was …252