Amazing view of Saturn’s moon Dione. Its density suggests that about a third of the moon is made up of a dense core (probably silicate rock) with the remainder of its material being water ice. (Credit: NASA/JPL-Caltech/Space Science Institute)

This stunning image, taken by the Hubble Space Telescope, showcases a region of star formation near the edge of the Tarantula Nebula. It serves as an ideal setting for examining the birth of massive stars. (Credit: ESA/Hubble, NASA, I. Stephens)

Gorgeous: The Whirlpool Galaxy (Credit: NASA/ESA)

The Moon was a good first step, Mars will test our capabilities, but Europa is the real prize: universal-sci.com/headlines/2016…

Do you believe we'll ever find definitive evidence of past life on Mars?

The galaxy known as the Sunburst Arc is located nearly 11 billion light-years distant, with its light being fractured into several images due to the phenomenon of gravitational lensing. (Credit: ESA/Hubble, NASA, Rivera-Thorsen et al)

“The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.” - Carl Sagan, Cosmos

Incredible: A violent and chaotic mass of gas and dust in a nearby supernova remnant called N 63A N 63A is the remains of a huge star that exploded, spewing its gaseous layers out into a turbulent region (Credit: NASA/ESA/HEIC and The Hubble Heritage Team (STScI/AURA)

Gorgeous: The Milky Way Above SOAR on Cerro Pachón (Credit: CTIO/NOIRLab/NSF/AURA/T. Slovinský)

Our sun is so enormous that it holds over 99% of the total mass of the entire solar system. It is about 333,000 times the mass of Earth!

Stunning: NGC 346 a star-forming region about 200 light-years across (Credit: NASA, ESA, A. Nota (ESA/STScI) et al.)

M45 Pleiades an open star cluster The blue nebulosity surrounding the brightest stars are due to blue light from the stars scattering off of dust grains in the interstellar gas Credit: T.A. Rector (University of Alaska Anchorage), Richard Cool (University of Arizona) and WIYN

If you could choose one medical breakthrough to happen, what would it be?

Breathtaking scenery of the Pillars of Creation, where the glow from nascent stars breaks through the veils of dust and gas in infrared light. Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)

What's a debunked fact that people continue to believe and share?

Interesting: Relative rotation rates of the planets cast to a single sphere (with apologies to Mercury & Neptune) (Credit: Dr. James O'Donoghue/Dr James O'Donoghue)