Started by PopeyesPappy, January 01, 2019, 11:30:13 AM
Quote from: PopeyesPappy on January 06, 2019, 10:11:06 AMThe software New Horizons launched with bears little resemblance to the software it has now. It has been updated several times. The slow transmit data rate is a hardware issue. Primary communication is via a pair of 12 watt transmitter connected to an 83" parabolic dish. It's a miracle of modern science that we can receive the signals at all at that distance. As the probe gets further away they have to slow the data rate in order to receive it. When it passed Jupiter is was transmitting at 38 kbps. At Pluto is was down to 2 kbps. Half a billion miles later at Ultima Thule they have slowed it to 1 kbps.By comparison the Voyager I probe uses a 22 watt transmitter connected to a 12' dish. It has a more powerful transmitter connected to a much larger antenna, it currently transmits at 160 bits per second, but at nearly 12 billion miles from Earth it is nearly 3 times further from us than the New Horizons probe.
Quote from: Baruch on January 06, 2019, 10:36:04 AMThat should be a 1/r^2 relationship, right? Basically it takes X watt-seconds to make out a byte of comm. The farther out you go, the longer it takes to assemble that total energy (the power staying the same at the transmitter).
Quote from: Minimalist on January 07, 2019, 11:15:14 AMNova ran an episode on that mission. Simply fascinating. I watched it last night.
Quote from: Minimalist on January 07, 2019, 11:24:16 AMI think that was the name of it.
Quote from: Minimalist on January 07, 2019, 03:33:23 PMIt is an ongoing mission.
Quote from: Gawdzilla Sama on January 07, 2019, 03:47:59 PM"It just keeps going and going and going and going..."
Quote from: Minimalist on January 07, 2019, 04:59:41 PMUnless it hits something.
Quote from: Unbeliever on January 07, 2019, 03:51:18 PMI guess what goes up doesn't really have to come down after all!
Quote from: Minimalist on January 07, 2019, 07:32:55 PMWhat if it nudges a space rock which hits another and another and then another and which finally dislodges a small asteroid which then crashes into Earth and ends all life?Wouldn't that suck?