1 00:00:18,96 --> 00:00:21,70 This is Dr Walt with insights from C.T.V. 2 00:00:22,08 --> 00:00:25,75 We always think of a planet is orbiting a central star we've got 3 00:00:25,76 --> 00:00:30,44 a pretty good example right here astronomers can also see other stars with planets 4 00:00:30,45 --> 00:00:34,66 circling around them the planets are made from leftover materials that form the 5 00:00:34,67 --> 00:00:39,70 central star however astronomers can also see that most solar systems have more 6 00:00:39,71 --> 00:00:42,31 than one star at the center usually it's 7 00:00:42,32 --> 00:00:46,67 a medium sized orange star like our own sun with its companion being either 8 00:00:46,68 --> 00:00:51,86 a large red giant or a smaller star called the Blue dwarf Recently 9 00:00:51,87 --> 00:00:56,58 a new actor has entered on the stage road planets free floating planets in the 10 00:00:56,59 --> 00:01:01,18 southern Constellation the raido have better identified about four times the mass 11 00:01:01,19 --> 00:01:05,76 of Jupiter the road planet was created from the leftovers of star formation as 12 00:01:05,77 --> 00:01:10,36 usual but then it somehow never was pulled into the gravitational fields of the 13 00:01:10,37 --> 00:01:16,39 nearby stars and continues floating along on its own they can only be night on such 14 00:01:16,40 --> 00:01:21,08 a planet no sunrise sunset or sunshine to run whatever life forms that are trying 15 00:01:21,09 --> 00:01:25,93 to get started there liquid such as water would probably be frozen minimizing the 16 00:01:25,94 --> 00:01:30,64 chances of life starting up those who dream of someday traveling to 17 00:01:30,65 --> 00:01:31,92 a nearby star now have 18 00:01:31,93 --> 00:01:37,17 a new navigational problem after the rocket sends the ship on its way the engines 19 00:01:37,18 --> 00:01:41,98 are shut off so that most of the time it is coasting and the spacecraft however 20 00:01:41,99 --> 00:01:42,99 would have to avoid 21 00:01:42,100 --> 00:01:48,32 a rogue planet and its gravitational field to stay on course that means carrying 22 00:01:48,33 --> 00:01:53,49 extra fuel multiple rogue planets means carrying so much fuel that the whole 23 00:01:53,50 --> 00:01:58,88 enterprise would probably become impossible. Superman Mabel able to leap over 24 00:01:58,89 --> 00:01:59,44 buildings of 25 00:01:59,45 --> 00:02:05,19 a single but will have to dodge road planets on our way of the stars as Dr Weil 26 00:02:05,20 --> 00:02:06,95 withinside from C.T.V. .