{ timerate { rate 0 } labels { clear "planets|minorplanets|stars|constellations" } renderflags { set "stars|planets" clear "constellations|orbits|cloudmaps" } print { text "Beginning demo . . .\nPress ESC to end." origin "center" duration 2 } wait { duration 2.0 } print { text "Let's start near home . . ." row -3 } select { object "Sol/Earth" } cancel {} goto { time 0 distance 1 upframe "ecliptical" } gotolonglat { time 0 distance 3 longitude -73 latitude 41 } synchronous {} lookback {} renderflags { set "constellations" } labels { set "constellations" } labels { set "stars" } labels { set "planets" } print { text "Should be looking back . . ." row -3 } orbit { axis [ 1 0 0 ] rate 30 duration 12 } rotate { duration 6 rate 30 axis [0 1 0] } changedistance { duration 4.0 rate -1.0 } # gotoloc { time 0.0 position [ 0 0 20000 ] } # wait { duration 0.1 } # center { time 0.1 } # wait { duration 1.0 } # follow {} # print { text "We're now orbiting about 12,500km above the Earth" row -3 duration 5 } # orbit { axis [ 0 1 0 ] rate 30 duration 10 } # print { text "Earth looks much more familiar with clouds." row -3} # wait { duration 0.1 } # renderflags { set "cloudmaps" } # orbit { axis [ 0 1 0 ] rate 30 duration 6 } # # print { text "Next stop: the Moon." row -3 } # select { object "Moon" } # goto { time 5 distance 4 upframe "equatorial" } # wait { duration 5.5 } # print { text "Watch for the Earth and Sun as we orbit the Moon" row -3} # orbit { axis [ 0 1 0 ] rate 30 duration 10 } # print { text "Off toward the Sun." row -3} # select { object "Sol" } # goto { time 8 distance 12 upframe "equatorial" up [ 0 1 0 ] } # wait { duration 8.5 } # print { text "At this distance, dark sunspots are visible on the Sun's surface." row -3} # orbit { axis [ 0 1 0 ] rate 20 duration 10 } # print { text "Let's zoom out for an overview of the inner solar system." row -3} # orbit { axis [ 1 0 0 ] rate 45 duration 2 } # renderflags { set "orbits" } # changedistance { duration 4.0 rate 1.0 } # print { text "Turning on planet labels . . ." row -3} # labels { set "planets" } # wait { duration 1.0 } # print { text "We can speed up time to watch the planets orbit the sun." row -3} # timerate { rate 2592000 } # wait { duration 3.0 } # print { text "For each second, a month of time elapses in the simulation." row -3} # wait { duration 12.0 } # timerate { rate 1 } # print { text "Now, time has been stopped completely." row -3} # wait { duration 1.0 } # print { text "Our next destination is Saturn." row -3} # select { object "Saturn" } # center { time 2 } # wait { duration 2 } # goto { time 8 distance 6 up [ 0 1 0 ] upframe "equatorial" } # wait { duration 6.5 } # renderflags { clear "orbits" } # labels { clear "planets" } # print { text "Several of the moons of Saturn are visible as bright dots" row -3 duration 3} # orbit { axis [ 0 1 0 ] rate 30 duration 12 } # select { object "Mimas" } # goto { time 5 distance 4 upframe "equatorial" } # print { text "The most prominent feature on Saturn's moon Mimas is the huge impact crater Herschel." row -3 duration 9 } # orbit { axis [ 0 1 0 ] rate 30 duration 12 } # changedistance { duration 6.0 rate 0.5 } # select { object "Sol" } # center { time 2 } # print { text "Note how faint the Sun appears at this distance." row -3 } # wait { duration 2 } # print { text "Let's look around at the stars in the sky." row -3 duration 2 } # wait { duration 2 } # select { object "Alpha UMa" } # center { time 2 } # print { text "Northern Hemisphere residents should recognize the Big Dipper in the constellation Ursa Major." row -3 duration 3 } # wait { duration 4 } # select { object "Polaris" } # center { time 2 } # wait { duration 2 } # print { text "We're now centered on Polaris, the North Star." row -3} # wait { duration 1 } # labels { set "stars" } # wait { duration 2 } # print { text "Polaris is part of the asterism commonly called the Little Dipper." row -3} # wait { duration 2 } # print { text "To help us get oriented in the sky, Celestia can draw constellation diagrams for us . . ." row -3} # renderflags { set "constellations" } # wait { duration 2 } # print { text ". . . and constellation names" row -3} # labels { set "constellations" } # wait { duration 2 } # select { object "Alnilam" } # center { time 4 } # wait { duration 2 } # print { text "Orion is the sky's most prominent constellation." row -3 duration 3 } # wait { duration 4 } # select { object "Beta Cru" } # center { time 4 } # wait { duration 2 } # print { text "The Southern Cross is a familiar sight in Southern Hemisphere skies." row -3 duration 4 } # wait { duration 4 } # rotate { axis [ 0.707 0.707 0 ] rate 20 duration 7 } # print { text "Let's enable galaxy rendering so that we can see the Milky Way" row -3 duration 4 } # renderflags { set "galaxies" } # rotate { axis [ 0.707 0.707 0 ] rate 20 duration 14 } # rotate { axis [ 0.707 0.707 0 ] rate 20 duration 10 } # select { object "Antares" } # center { time 5 } # wait { duration 3 } # print { text "We'll now travel to Antares, a red giant star in Scorpius." row -3 duration 5 } # wait { duration 2 } # renderflags { clear "constellations" } # labels { clear "constellations|stars" } # wait { duration 1 } # goto { time 8 distance 200 } # wait { duration 8.5 } # goto { time 5 distance 10 } # wait { duration 5.0 } # print { text "Even though we are now 10 times farther from Antares than\nEarth is from the Sun, the massive red giant star still looms huge in the sky." row -3} # wait { duration 4.0 } # print { text "Let's zoom out and get the big picture . . ." row -3} # changedistance { duration 10.0 rate 2.0 } # select { object "Milky Way" } # print { text "We're viewing the entire Milky Way galaxy." row -3 duration 6 } # orbit { axis [ 1 0 0 ] rate 30 duration 16.0 } # print { text "Time to go home . . ." row -3} # select { object "Sol/Earth" } # goto { time 20 distance 10 upframe "equatorial" } # wait { duration 20.0 } # print { text "Demo completed." row -3} # wait { duration 3.0 } }