Measuring stellar distances
Framed Prints
This artwork is available as
Framed Print of Measuring stellar distances
Diagram showing how astronomers measure the distances to nearby stars using trigonometric parallax. When you hold your finger up in front of your face and close one eye and then the other, its position relative to the background changes a phenomenon known as parallax. It occurs because each eye sees the finger from a slightly different position. Similarly, the nearest stars seem to move relative to the more distant background stars, as the Earth orbits the Sun. When the Earth in on one side of its orbit, say in January, a nearby star will have a certain position relative to the background stars. But six months later, the stars location will change by a tiny amount, an angle known as the trigonometric parallax. Knowing this angle and the diameter of Earths orbit (300 million km), astronomers can calculate the distances to these nearby stars with a fairly high accuracy. Science Photo Library features Science and Medical images including photos and illustrations. © Weldon Owen pty ltd
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Media ID 9207397
Astronomer Distances Nearby Parallax Star Trigonometry
Modern 14"x12" (36x31cm)
Ready to Hang Contemporary Framed Prints adds style, protection, and a polished touch to your space - effortlessly.
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Wood effect frame, card mounted, 10x8 fade resistant photo print. Overall outside dimensions 14x12 inches (36x31cm). Environmentally and ozone friendly, 40mm wide x 15mm Polycore® moulding has the look of real wood, is durable and light and easy to hang. Biodegradable and made with non-chlorinated gases (no toxic fumes) it is efficient; producing 100 tons of polystyrene can save 300 tons of trees! Prints are glazed with lightweight, shatterproof, optical clarity acrylic (providing the same general protection from the environment as glass). The back is stapled hardboard with a sawtooth hanger attached. Note: measurements provided are estimated outer dimensions, which include both the image and the frame. While we aim to keep sizing consistent, exact dimensions may vary slightly due to differences in print size or production requirements, which may result in a variation in the overall size (up to approximately 2.5cm (1"))
These are individually made so all sizes are approximate
Estimated Image Size (if not cropped) is 24.4cm x 16.7cm (9.6" x 6.6")
Estimated Product Size is 36cm x 31cm (14.2" x 12.2")
