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Stories, updates, insights, and original analysis from The Planetary Society.
The Space Advocate Newsletter, March 2026
Artemis vis-a-vis Apollo.
The Artemis II mission: What to expect
Artemis II will send humans back to the Moon for the first time in over 50 years, with four astronauts on a 10-day mission around the Moon and back. Here’s what to expect.
Calendar of space events 2026
Space missions, rocket launches, and celestial events are coming our way in 2026.
Why send people back to the Moon?
What can an astronaut do on the Moon that a robot can’t?
How soon will Starship fly?
One rocket could decide how soon humanity returns to the Moon — and maybe one day sets foot on Mars.
What to look forward to in space in 2024
A total solar eclipse and the launch of Europa Clipper are on our list of cosmic events to get excited about this year.
To the moon together
An interview with Scott Pace about the Moon’s role in internationally cooperative human space exploration.
That’s a mare
An unusual lunar feature, Saturn’s shining rings, and Mars’ complex gullies.
Would you like some salty water with your space salad?
Two new grant-winning projects, a collection of awesome space imagery, a mighty plume, and much more this week in space.
Way out there
We’re always learning more about the worlds of the outer Solar System, and even those beyond.
A mission to pull back the shroud
VERITAS would peer through Venus’ clouds to study its surface like never before, but it needs your help.
Asteroids worth getting psyched about
New discoveries from Ryugu, material heading our way from Bennu, and anticipation for a mission to Psyche.
Volcanic Venus, myriad moons, and space sonification
Learn all about the possible volcanic activity found on Venus, the facts about a hyped-up near-Earth asteroid, Jupiter’s newest moons, and what space images sound like.
Spectacularly crepuscular!
Curiosity captures crepuscular rays on Mars, a new member community launches, and solar sailing takes exploration into the future.
Never let a rock sneak up on you
Finding asteroids before they hit Earth not only protects us from harm, it can also yield beautiful photos.
Red hot space
This week’s roundup of space news and exploration inspiration will leave you seeing red (in the best way possible).
Extraterrestrial frosts
Frost happens throughout the Solar System, creating beautiful views. Learn why and check out the latest in space news.
A long night, and “so long!” to InSight
Celebrate the December solstice, be thankful you’re not on Triton, and say goodbye to the InSight Mars lander.
Capturing the Cosmos
This week we have images snapped the old-fashioned and cutting-edge ways, creative ways of thinking about exploration, and artwork that expresses the beauty of it all.
Your impact: December solstice 2022
A great kickstart to our new kids membership program!



Sun
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Small Bodies