Scott Alan Johnston
Now we Know why Spaceflight Affects Your Eyes
70% of astronauts who spend time on the International Space Station (ISS) experience swelling at the back of their eyes,…
2029 Will be the Perfect Year to Launch a Mission to Sedna
Object 90377 Sedna - a distant trans-Neptunian object known best for its highly elliptical, 11,390-year long orbit - is currently…
Life Could Make Habitable Pockets in Venus’ Atmosphere
The tantalizing possibility that life exists in the clouds of Venus is once again causing a stir amongst planetary scientists…
NASA has 4 new Earth Science Missions Launching in 2022
Outer space is a great place to go if you want to study the Earth. Although outward-looking spacecraft like Hubble…
If There are Water Plumes on Europa, Here’s how Europa Clipper Will Study Them
NASA’s Europa Clipper is one of the most anticipated missions of the coming decade, in large part because its target,…
It’s Time to Stop Doing Anti-Satellite Tests
Earlier this month, the Russian military conducted an anti-satellite (ASAT) missile test, launching a PL19 Nudol interceptor missile at a…
We’re Constantly Battling Invasive Species Here on Earth. What Does That Teach us About Infecting Other Worlds With Earth Life?
When Neil Armstrong, Buzz Aldrin, and Michael Collins returned from the Moon in the summer of 1969, they spent three…
Fungi Were Able to Absorb Radiation on the ISS. Could Astronauts Grow Their own Radiation Shields in Space?
A lack of effective radiation shielding is one of the biggest challenges still to be overcome if humans are to…
Artemis 1 is Launching in February
It’s been a long time coming, but NASA’s next moon rocket is just months from liftoff on its first uncrewed…
Did Titan Give Saturn its Tilt?
Giant planets like Saturn don't just tilt over all by themselves: something has to knock them over, or tug on…