Oldest dinosaur embryos discovered
A color-filtered image of a dinosaur embryo fossil shows a preserved thigh bone. The honeycomb-like structure is bone tissue.
April 10th, 2013
02:50 PM ET

Oldest dinosaur embryos discovered

By Azadeh Ansari, CNN

Everyone knows dinosaurs were gigantic, but they grew from tiny embryos just like birds do. What were these extinct reptiles like at this early stage of development?

Scientists have found some new clues that could shed light on this age-old mystery.

In a study published Wednesday in the journal Nature, scientists said they have discovered the oldest known collection of fossilized dinosaur embryos.

"In a way, I think we have set a new standard for dinosaur embryology," said paleontologist Robert Reisz, the lead study author.

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Filed under: Dinosaurs • Discoveries • On Earth
Pioneer 11 Image of Saturn and Its Moon Titan
April 10th, 2013
11:03 AM ET

Pioneer 11 Image of Saturn and Its Moon Titan

"The Pioneer 11 spacecraft launched from Cape Canaveral forty years ago, on April 5, 1973. Pioneer 11's path through Saturn's outer rings took it within 21,000 km of the planet, where it discovered two new moons (almost smacking into one of them in September 1979) and a new "F" ring. The spacecraft also discovered and charted the magnetosphere, magnetic field and mapped the general structure of Saturn's interior. The spacecraft's instruments measured the heat radiation from Saturn's interior and found that its planet-sized moon, Titan, was too cold to support life.

This image from Pioneer 11 shows Saturn and its moon Titan. The irregularities in ring silhouette and shadow are due to technical anomalies in the preliminary data later corrected. At the time this image was taken, Pioneer was 2,846,000 km (1,768,422 miles) from Saturn."

Source: NASA

Filed under: Light up the screen

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