Science LinksIf the Moon were only one pixel - A tediously accurate
scale model of the Solar System.
Note from Dave the Webmaster:
I love this website. It
depicts not only the size of
objects in our Solar System to scale
by size, but also to
distance. This is normally very
hard to accomplish.
can only find one of two
types: To scale by size, or to
distance, but not both.
To do both at the same time is
This website first shows the Sun, which takes up
screen, and then you scroll to your right until you see
the planet closest to the Sun. This takes a while,
and you will
see how unbelieveably far
from the Sun. When you
do finally see Mercury, it will be
sized to scale, compared to the
Sun, and it will be really tiny, like a
small dot, about the size of
the Moon. In this scenario, the
Moon is the size of one pixel on
your screen, and the rest of the
objects in the Solar System
use that as a reference for sizing the
cool thing is that you can have it
across at the speed of light. Although the
speed of light to us
seems basically instantaneous, at this scale, it
considerably slower. As an example, it takes light from
Sun 8.3 minutes, in real time, to reach the Earth, therefore the
light-minutes from the Sun. When you look at the
Sun, you are
actually seeing it as it was 8.3 minutes ago. In
you would have to sit there and watch it for
just over 8 minutes before
Earth shows up. So, in this
simulation, if you want to get an idea of how the speed of
click on the following symbol in the lower,
right-hand corner of
simulation will automatically scroll from left to right at
the speed of
light at this scale. If you start at the Sun,
you click it,
it will actually take you 8.3 minutes in
real time, scrolling
right, until you get to see the Earth.
let the simulation continue all the way to Pluto, it
takes, in real time, 328.4 minutes in
real time. Sitting at
your computer, you would have to sit
watching it, until you see Pluto.
If you were on the
surface of Pluto, and you were looking
at the Sun, you would be seeing
the Sun as it was just less
than 6 hours ago. If the Sun was to
explode, if you were on
Pluto, you would not know for almost 6
hours. All of this
gives you an appreciation not only of the relative sizes of the
objects in the Solar
System, but also the relative distances.
Bad Astronomy - The Bad Astronomy web pages are devoted
to airing out myths and misconceptions in astronomy and
Moon Base Clavius - An organization of amateurs and
professionals devoted to the Apollo program and
exploration of the moon. Their special
mission is to debunk
the so-called conspiracy
theories that state such a landing
may never have
Bizarre Hexagon on Saturn Shines in Spectacular NASA Photo
A stunning new photo of Saturn's north pole spotlights the
bizarre hexagon-shaped vortex and beautiful bands
of swirling winds.
Bizarre Giant Hexagon on Saturn May Finally Be Explained
The huge, mysterious hexagon at Saturn's north pole may
finally have an explanation.
Astronomers Want to Use the Sun as a Massive Telescope
The proposed gravitational lensing technique could produce
high-quality images of exoplanets from hundreds of
Mars Pathfinder - An American robotic spacecraft that
landed a base station with a roving probe on Mars in 1997.
Comet Shoemaker - Levy 9 - A comet that broke apart in
and collided with Jupiter on July 1994, providing
the first direct
observation of an extraterrestrial collision
of Solar System objects.
The Lyndon B. Johnson Space Center - NASA's Manned
Spacecraft Center, where human
research, and flight control are conducted.
Welcome to the Planets - A collection of many of the best
images from NASA's planetary exploration
The Nine Planets - A multi-media tour of the Solar System.
Since December 1968, Kennedy Space Center has been
NASA's primary launch center of human spaceflight.
International Space Station - A space station, or a habitable
artificial satellite, in low Earth orbit.
Earth and Moon
Viewer - You can view either a
map of the
Earth showing the day and night regions at this moment, or
Earth from the
Sun, the Moon, the night side of the
Earth, above any
location on the planet specified by latitude,
longitude and altitude, from a
satellite in Earth orbit, or
above various cities around the globe.
Stargazing - Unaided eye observing is observing
astronomical objects without optical instruments such as
binoculars and telescopes.
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