NASA – Page 4 – Astronomy Now

An interview with David Grinspoon

28 December 2017 Astronomy Now

As part of the new Gravity Assist podcast, NASA’s Director of Planetary Science Jim Green interviewed David Grinspoon of the Planetary Science Institute in Arizona about the planet Venus and what makes the second world from the Sun so hellish compared to Earth.

NASA’s Dawn mission gears up for close look at Ceres

20 October 2017 Stephen Clark

NASA’s Dawn spacecraft will remain at Ceres for the rest of its mission, heading closer to the asteroid belt’s largest resident than ever before to obtain new measurements of ice, salts and a tenuous intermittent atmosphere detected around the dwarf planet, the space agency announced Thursday.

Dawn mission managers await NASA decision on spacecraft’s future

17 June 2017 Stephen Clark

The future of NASA’s Dawn spacecraft, running low on hydrazine fuel and now flying around the dwarf planet Ceres without the help of internal pointing wheels, will be decided in the coming weeks by top space agency managers.

NuSTAR finds new clues to ‘chameleon supernova’

25 January 2017 Stephen Clark

“We’re made of star stuff,” astronomer Carl Sagan famously said. Nuclear reactions that happened in ancient stars generated much of the material that makes up our bodies, our planet and our solar system. When stars explode in violent deaths called supernovae, those newly formed elements escape and spread out in the universe.

Microlensing study suggests most common outer planets likely Neptune-mass

16 December 2016 Astronomy Now

A new statistical study of planets found by a technique called gravitational microlensing suggests that Neptune-mass worlds are likely the most common type of planet to form in the icy outer realms of planetary systems.

OSIRIS-REx probe launched to asteroid in compelling search for the origins of life

9 September 2016 Justin Ray

Like reaching back in time to examine the conditions that existed in the ancient solar system, NASA has launched a robotic probe to visit Asteroid Bennu and return an unspoiled sample of the primitive body that may hold the seeds of life.

Live coverage: The launch of NASA’s OSIRIS-REx asteroid mission

8 September 2016 Justin Ray

Beginning a 4.4-billion-mile trek to retrieve a sample from Asteroid Bennu for return to Earth, NASA’s OSIRIS-REx spacecraft blasted off atop an Atlas 5 rocket from Cape Canaveral at 12:05 a.m. BST (2305 GMT).

Probe hoisted aboard launcher to leave Earth next week on asteroid adventure

31 August 2016 Justin Ray

NASA’s OSIRIS-REx spacecraft moved a step closer to starting a voyage to explore an uncharted world in our solar system — the mountain-sized Asteroid Bennu — by joining the booster rocket that will propel it from Earth next week.

Watch the OSIRIS-REx asteroid sample return mission briefing

21 August 2016 Astronomy Now

Watch as NASA holds a news conference at its Washington, D.C. headquarters to provide a preview of its OSIRIS-REx mission to asteroid Bennu and back. The mission is scheduled to launch on 8 September, reach the asteroid in 2018, capture a sample of the celestial body in 2020 and bring the specimen back to Earth in a special landing capsule in 2023.

Juno spacecraft braves the unknown at Jupiter to enter orbit

5 July 2016 Stephen Clark

Setting up post at the king of planets, NASA’s Juno spacecraft fired its main engine for 35 minutes Monday, steering into orbit around Jupiter to peer inside the gas giant and give scientists a better idea of how the solar system took shape 4.6 billion years ago.