Are Ceres and Vesta giant asteroids or dwarf planets and how did our Dawn mission explore them? How do we track asteroids moving through our solar system? And... is Pluto a planet? 🤔 🎧 📲 Listen & subscribe to @NASAJPL's "On a Mission" podcast for more: https://t.co/Oy68du3x9Y

Ceres, with a key landmark, the cryovolcano Ahuna Mons, visible on the horizon. This was one of the last views our Dawn spacecraft transmitted before its mission came to an end one year ago. See more from Dawn’s voyage to the asteroid belt: https://t.co/orRtW24LbY

The mysterious lonely mountain of Ceres yields some of its secrets 🗻 https://t.co/h7sRlJZVMM

Four years ago today, our Dawn spacecraft captured this sequence as it approached the dwarf planet Ceres. This week, the Space Foundation presented the Dawn mission team with the 2019 John L. "Jack" Swigert, Jr., Award for Space Exploration: https://t.co/Ek3qp6l0FU

Our science never gets soggy!

Today in 2015, NASA’s Dawn spacecraft arrived at the mysterious dwarf planet Ceres. Dawn’s mission has ended, but here on Earth the science of Ceres goes on. Researchers want to know: what processes drove salty water to Ceres’ surface? https://t.co/F00aqIQHbU

Congratulations @NASA_Dawn and @NASAJPL! Well deserved! 🚀

Congratulations to my entire team! The Space Foundation has awarded our mission the 2019 John L. "Jack" Swigert, Jr. Award for Space Exploration. What an honor it was to help extend the legacy of explorers like Captain Swigert into the asteroid belt: https://t.co/WBAvG90sh9

Following NASA’s strict planetary protection protocols, my engineers have placed me in an orbit around Ceres that should remain stable for decades. I’ll continue to circle as a satellite around one of the worlds I studied for so long. That’s no moon. That’s me.

My mission has ended—but the science hasn’t. Explorers will study my data for decades to come, while missions like @OSIRISREx, @NASANewHorizons and others will continue their own quests to explore the solar system's other small worlds. Follow @NASASolarSystem for the latest.

Eleven years. Billions of miles. Extended expeditions to two worlds from the dawn of our solar system, Vesta and Ceres. Now my mission has come to an end. To all the people who made this journey possible, thank you. https://t.co/IOjzKibSJR #DuskForDawn

As we both approach the end of our missions, let me just say, it’s an honor to have flown with you, @NASAKepler. “The Coincidence Between Two Overachieving NASA Missions:” https://t.co/xpMXpYjvXo #DuskforDawn

Oh, the places I’ve been. Look back at 11 years of discovery in just 60 seconds. More highlights: https://t.co/Lj07of1G8h #DuskforDawn

Let me explain... No, there is too much. Let me sum up. How do you capture an 11-year odyssey through the asteroid belt to study the origins of the solar system? It’s not easy, but we gave it a shot: https://t.co/tpEGBymhMU #DuskforDawn

From fuzzy dots to worlds: what we knew about #Vesta and #Ceres before my mission to the asteroid belt--and what we know now. https://t.co/fulaBgvPDg

Ion engines are not just for TIE fighters! Learn about the high-tech propulsion that made my mission possible: https://t.co/hR2IY66StY

Over the last 11 years, I’ve traveled out to the asteroid belt, and looked back to the beginnings of the solar system. Here are some of the highlights: https://t.co/jkvt7ZHs1Z #DuskForDawn

Have you seen my latest close-ups of Ceres? 📸 Take a look at recent images from my favorite dwarf planet: https://t.co/LAVEVa5QVC

Rolling stones: these tracks in Urvara crater on Ceres came from boulders rolling down the crater’s walls. I captured this view in July, from an altitude of about 28 miles. Details: https://t.co/OW9SUHXCf9

Let me explain... No, there is too much. Let me sum up. How do you capture an 11-year odyssey through the asteroid belt to study the origins of the solar system? It’s not easy, but we gave it a shot: https://t.co/tpEGBymhMU #DuskforDawn