Ricky Arnold

@NASA Astronaut & Global Educator. Currently serving as Director of STEM Engagement @UMCES. Tweets are my own. IG:@astro_ricky

[Ricky Arnold @astro_ricky]

@ASE_Astronauts It is appropriate that we remember Steve on #NationalMentoringDay - he was an excellent mentor to many of us.

[Ricky Arnold @astro_ricky]

“…the amount of plastic actually turned into new things has fallen to new lows of around 5 percent”
Plastic recycling simply isn’t working.

[NPR @NPR]

The vast majority of plastic that people put into recycling bins is headed to landfills, or worse, according to a report from Greenpeace on the state of plastic recycling in the U.S.. https://t.co/ynQE9xYucQ

[Ricky Arnold @astro_ricky]

We are merely sharing a moment. Embrace it. #MondayMotivation

[Massimo @Rainmaker1973]

The most common estimates of the humans who have ever lived on Earth are around 108 billion people. Using that assumption, a little under 7% of all people who have ever lived are alive right now

[source: https://t.co/mCs7scrMjD]
[read more: https://t.co/DlonMbTMdw]

[Don Pettit @astro_Pettit]

Green River; flying over aurora during Exp 30 to ISS.

[Massimo @Rainmaker1973]

You may not believe that your cat was born with a predatory instinct because it's a so playful critter, but it looks like cats are responsible for the global extinction of 33 animal species & responsible for the deaths of 6.9-20.7 billion mammals annually https://t.co/6CtFl4uR4y

[Ricky Arnold @astro_ricky]

Our perception of our universe continues to grow in both wonder and mystery. 📷 @nasa @esa @csa_asc STScI

[Ricky Arnold @astro_ricky]

#Neptune, its rings, and 7 of its 14 known moons. 📷 @NASAWebbTelescp @esa @csa_asc STScI

[Ricky Arnold @astro_ricky]

@elissaben70 @marinamaral2

[Ricky Arnold @astro_ricky]

Fall in #Italy 🇮🇹

[ESA Earth Observation @ESA_EO]

Autumn colours from space 🍂😍
This @CopernicusEU #Sentinel2 image shows foliage in the central Apennines, Italy. The image was captured on 17 October https://t.co/U8vXndUC6w

[Ricky Arnold @astro_ricky]

An electric valentine.

[Massimo @Rainmaker1973]

Lightning can assume various shapes. This is possibly one of the most stunning, in a picture by Jean-Yves Villa captured in 2016

[source, HD: https://t.co/9dWcilzS3P]

[NPR @NPR]

Astronaut Jim McDivitt, who played a key role in making America's first spacewalk and moon landing possible, has died at age 93.
https://t.co/O0vZHiYEcg

[Ricky Arnold @astro_ricky]

Welcome home!

[NASA @NASA]

After 170 days in orbit, our SpaceX Crew-4 astronauts safely splashed down at 4:55pm ET (20:55 UTC) Friday off the coast of Jacksonville, Florida, completing our fourth @Commercial_Crew mission to the International @Space_Station: https://t.co/XLOeKCjrTM

[Ricky Arnold @astro_ricky]

We must care for all crew on spaceship Earth.

[NPR @NPR]

Animal populations across the world shrunk by an average of 69% between 1970 and 2018, researchers found. The steep loss in biodiversity is caused mainly by human activity — and experts say we have limited time to fix it.
https://t.co/9hZjjuDTTT

[Jason Major @JPMajor]

This is the first photo of an "Earthrise" captured by humans from lunar orbit: AS08-13-2329, taken by Apollo 8 LMP Bill Anders on December 24, 1968 (crop of the original).

After taking it Bill asked for a roll of color film.

[Ricky Arnold @astro_ricky]

The second-largest canyon in the solar system as seen from @Space_Station . The most grand is Valles Marineris found on #Mars 📷 @esa

[Kjell Lindgren @astro_kjell]

A grand panorama of the Grand Canyon - thanks to @devinboldt for putting this together!

[Ricky Arnold @astro_ricky]

@gunsnrosesgirl3 Sending positive thoughts your way.

[Kim Hudaya @huedaya]

Tambang Grasberg, Papua Barat dan Gletser Es Jayawijaya.

📸 NASA/Ricky Arnold (@astro_ricky)

[Kim Hudaya @huedaya]

Indonesia dari Luar Angkasa

Beberapa astronaut mengambil gambar spektakuler ketika sedang melewati Kepulauan Indonesia, berikut beberapa foto dengan penanda informasi.

Sebuah Utas 🧵

[Ricky Arnold @astro_ricky]

It’s not all about money.

[Maryland Matters || bsky @marylandmatters.org @marylandmatters]

'I absolutely love to teach, but I hate the job of a teacher.' https://t.co/0ddULQK6ny

[Bob “Farmer” Hines @Astro_FarmerBob]

This picture shows how the Florida peninsula is shedding all the water #HurricanIan dumped on it. This was taken approx 2 days after it made landfall. Ian sure churned up the waters of the Gulf of Mexico!