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Tropical Storm Arthur

2026-06-19 04:00




Natural color
brightness temperature

Tropical Storm Arthur’s white storm clouds cover the waters off the U.S. Gulf Coast. Some clouds extend inland over parts of Texas and Louisiana.
Tropical Storm Arthur’s white storm clouds cover the waters off the U.S. Gulf Coast. Some clouds extend inland over parts of Texas and Louisiana.
NASA Earth Observatory/Michala Garrison

White and purple areas of cloud off the Gulf Coast indicate the cooler areas of cloud tops associated with Tropical Storm Arthur.
White and purple areas of cloud off the Gulf Coast indicate the cooler areas of cloud tops associated with Tropical Storm Arthur.
NASA Earth Observatory/Michala Garrison

Tropical Storm Arthur’s white storm clouds cover the waters off the U.S. Gulf Coast. Some clouds extend inland over parts of Texas and Louisiana.
Tropical Storm Arthur’s white storm clouds cover the waters off the U.S. Gulf Coast. Some clouds extend inland over parts of Texas and Louisiana.
NASA Earth Observatory/Michala Garrison

White and purple areas of cloud off the Gulf Coast indicate the cooler areas of cloud tops associated with Tropical Storm Arthur.
White and purple areas of cloud off the Gulf Coast indicate the cooler areas of cloud tops associated with Tropical Storm Arthur.
NASA Earth Observatory/Michala Garrison


Natural color

brightness temperature


Images from the MODIS (Moderate Resolution Imaging Spectroradiometer) on NASA’s Terra satellite show Tropical Storm Arthur on the morning of June 17, 2026. The left image is natural color; the right shows infrared signals known as brightness temperature. NASA Earth Observatory images by Michala Garrison.

Tropical Storm Arthur, the first named storm of the 2026 Atlantic hurricane season, brought high winds and heavy rain to the U.S. Gulf Coast in mid-June.

NASA’s Terra satellite captured this natural-color image (left) at 10:30 a.m. Central Time (15:30 Universal Time) on June 17. The second image (right) depicts infrared signals known as brightness temperature, which help distinguish cooler cloud tops (white and purple) from the warmer surface below (yellow and orange). Around the time these images were acquired, the system had just recently been designated a tropical storm, according to the National Hurricane Center (NHC).

Though Arthur stayed below hurricane strength, it still delivered strong winds to parts of the Gulf Coast as it tracked northeast. The storm had maximum sustained winds of 40 miles (65 kilometers) per hour around the time these images were captured. Tropical-storm-force winds extended 175 miles (280 kilometers) from the storm’s center, the NHC reported. Measurements at Galveston, Texas, for instance, showed a gust of 48 miles per hour.

The storm also produced heavy rainfall that the National Weather Service warned could lead to life-threatening flash flooding. Estimates from IMERG (the Integrated Multi-Satellite Retrievals for GPM), a product of the GPM (Global Precipitation Measurement) mission, showed high rainfall rates over Gulf waters and extending inland on June 17.

As Arthur weakened and became less organized, it continued to bring abundant moisture to central Gulf Coast states on June 18. The National Weather Service reported rainfall rates of 3 inches (7.6 centimeters) per hour in southeastern Louisiana. Forecasts indicated that storm-total rainfall amounts could exceed 12 inches (30 centimeters) in areas, with some locations seeing totals approaching 20 inches (51 centimeters).

NASA Earth Observatory images by Michala Garrison, using MODIS data from NASA EOSDIS LANCE and GIBS/Worldview. Story by Kathryn Hansen.

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Curiosity Blog, Sols 4920-4926: Surveying the Bands

2026-06-19 00:50

3 min read

Curiosity Blog, Sols 4920-4926: Surveying the Bands

A black-and-white image of a barren Martian landscape featuring a prominent, roughly pyramidal rock outcropping in the foreground. The rock's lower half is rugged with deep cracks and textured layers, while its peak appears lighter and smoother, possibly covered in dust. The surrounding terrain stretches into the background with scattered smaller rocks and another low mound in the distance.
NASA’s Mars rover Curiosity acquired this image of small butte, “Miraflores,” using its Mast Camera (Mastcam) on June 11, 2026 — Sol 4922, or Martian day 4,922 of the Mars Science Laboratory mission — at 09:12:13 UTC.
NASA/JPL-Caltech/MSSS

Written by William Farrand, Senior Research Scientist, Space Science Institute

Earth planning date: Friday, June 12, 2026

Rather than going from stage to stage at a music festival to hear different bands playing different varieties of music, Curiosity has been ascending up Mount Sharp through physical bands of exposed rocks with textural and tonal differences.

Planning for sols 4920 and 4921 were done with the rover in the middle of a unit with a rougher texture and dark-toned bedrock. With the rougher-textured bedrock, brushing wasn’t possible, but APXS chemistry and MAHLI micro-imaging were planned on “as is” bedrock targets “Salto La Cascada” and “Puerto de Rosas.” ChemCam was targeted to perform LIBS spectroscopy on a bedrock target “Kishuara” and a small, layered float rock “La Rosita.” ChemCam’s Remote Micro-Imager (RMI) collected views of the “Mishe Mokwa” butte and another looking at dunes with tonal differences. Mastcam mosaics were collected on the “Valle Grande” channel, “Kimsa Chata” butte, nearby troughs, and the aircraft carrier shaped rock “El Matir.”

Another drive brought Curiosity closer to the upper border of the dark-toned band. Again, brushing of the rocks was not possible, but APXS and MAHLI were collected on dark-toned bedrock targets “Santa Gracia” and “Laguna San Rafael” with ChemCam LIBS also targeting the bedrock. Mastcam mosaics were collected of a layered rock and nearby troughs and a mosaic of the nearby smaller butte, “Miraflores” which displays an interesting layered structure with ragged dark-toned rocks on one side and a stack of dust piled on top (see accompanying image). Other activities included a long-distance RMI mosaic of a bright unit on “Mishe Mokwa”, and Navcam dust-devil surveys in both sols.

Communicating between Earth and Mars has come to seem routine, but at times can still be a challenging endeavor and this was demonstrated to the team on Friday when we did not get a timely downlink of data for the drive planned for Sol 4923. Without these images another drive, in situ examinations, or targeted remote sensing could not be planned. However, there are always interesting things to be done on Mars and the three-sol plan (4924 to 4926) included a 360-degree Mastcam mosaic, the automatic AEGIS targeting of LIBS measurements on each sol, a Navcam dust-devil survey, APXS atmospheric measurements, as well as several other environmental activities.

On Monday, the delayed downlink will be used to plan the first investigation of the next band of surface materials, this one being smooth-textured and light-toned, as well as another drive to continue the surveying of the bands.

A rover sits on the hilly, orange Martian surface beneath a flat grey sky, surrounded by chunks of rock.
NASA’s Curiosity rover at the base of Mount Sharp
NASA/JPL-Caltech/MSSS

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Last Updated

Jun 18, 2026

Related Terms

NASA Mission to Study Space Weather Impacts of Earth’s Atmosphere

2026-06-18 21:33

Artist’s rendition of the DAPHNE (Dynamic Atmosphere-Ionosphere Explorer) mission concept.
Artist’s rendition of the DAPHNE (Dynamic Atmosphere-Ionosphere Explorer) mission concept. The coloring represents auroras and atmospheric waves in Earth’s atmosphere.
Credit: Laboratory for Atmospheric and Space Physics/Mary Tostanoski

NASA selected a mission concept to research how space weather and dynamics within Earth’s atmosphere influence the space environment and help improve prediction capabilities for impacts on crucial technology, such as GPS and low Earth orbit satellites, as well as astronauts in space.

The DAPHNE (Dynamic Atmosphere-Ionosphere Explorer) mission will enter Phase B of development, which includes planning and design for flight and mission operations. It will use identical twin satellites to study how changes in Earth’s lower atmosphere influence our planet’s upper atmosphere, where space weather is manifested.

“NASA is advancing the United States’ leadership as a space weather-ready nation, and by providing new insights into Earth’s atmosphere we can better predict and prepare for impacts in our daily lives on Earth and in space,” said Nicky Fox, associate administrator, Science Mission Directorate, NASA Headquarters in Washington. “As NASA sends astronauts beyond Earth’s magnetic protection to the Moon, Mars, and beyond, DAPHNE will join the NASA science fleet strategically located across the solar system to provide data that will help mission planners predict and mitigate the effects of space weather for the benefit of all.”

The DAPHNE mission’s low-risk high-return concept will provide coordinated, multi-point measurements of neutral winds, temperature, and composition in the thermosphere. The ionosphere and thermosphere regions are where Earth’s neutral atmosphere transitions into the ionized plasma of space. In this thin shell that surrounds the planet, the atmosphere is in constant motion, shaped by the influence of solar activity and changes in the lower atmosphere and in near-Earth space.

Fundamental observations and physical insights from the DAPHNE mission will incorporate lower-atmospheric energy data to advance space weather predictive capabilities. The mission is led by Aimee Merkel from the Laboratory for Atmospheric and Space Physics at the University of Colorado, Boulder.

The mission will be subject to a confirmation review in 2027, which will assess the progress of the mission and the availability of funds. If confirmed, the total estimated cost of the mission, excluding launch, will not exceed $250 million in fiscal year 2023 dollars, with a mission launch date of no earlier than 2029.

The DAPHNE mission was proposed as a concept study in response to the DYNAMIC (Dynamical Neutral Atmosphere-Ionosphere Coupling) mission announcement of opportunity. Funding and management oversight for this mission is provided by the Solar Terrestrial Probes program at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

For more information on NASA’s heliophysics missions, visit:

https://science.nasa.gov/heliophysics

-end-

Abbey Interrante / Karen Fox
Headquarters, Washington
202-358-1600
abbey.a.interrante@nasa.gov / karen.c.fox@nasa.gov

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Last Updated
Jun 18, 2026
NASA Awards Contract for Commercial Satellite Data Acquisition

2026-06-18 20:13

NASA insignia.
Credit: NASA

NASA has selected eight new companies and will acquire new data products from six existing Commercial Satellite Data Acquisition contract holders to expand the range of commercial satellite data available to researchers, civil agencies, and decision-makers. Such measurements supplement NASA’s Earth satellites by contributing high-resolution and frequent observations to enhance the agency’s set of data.

Leveraging commercial data demonstrates NASA’s commitment to strong public-private partnerships, allowing the agency to expand scientific insight while reducing costs and accelerating the delivery of data to researchers and decision-makers.

Collectively, NASA and commercial Earth observations provide insight into our home planet – benefitting Americans, providing environmental intelligence, strengthening disaster response, and improving public safety.  

The Commercial Satellite Data Acquisition Program On-Ramp 2 Multiple Award contract is a firm-fixed-price, indefinite-delivery/indefinite-quantity multiple-award contract. The original maximum contract value was $476 million, with a performance period that began in 2023 and continues through Nov. 15, 2028.

Contract awardees are:

  • Airbus DS Geo Inc.
  • GHGSat Inc.
  • Hydrosat Inc.
  • ICEYE US Inc.
  • ImageSat International
  • Kuva US Inc.
  • Muon Space Inc.
  • Orbital Sidekick Inc.
  • OroraTech USA Inc.
  • Planet Labs Federal Inc.
  • Space Sciences and Engineering LLC, doing business as PlanetiQ
  • SATLANTIS US
  • Tomorrow Companies Inc., doing business as Tomorrow.io
  • Wyvern Inc.

The agency’s Commercial Satellite Data Acquisition mission works to execute a cost-effective way to augment and complement the suite of Earth observations captured by NASA and its partners by identifying, evaluating, and acquiring commercial satellite data.

For more information about NASA’s Commercial Satellite Acquisition program, visit:

https://science.nasa.gov/earth-science/csda

-end-

Liz Vlock
Headquarters, Washington
202-358-1600
elizabeth.a.vlock@nasa.gov

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Last Updated
Jun 18, 2026
Editor
Jessica Taveau
From Suriname to Space: Rohit Goeptar Shares His Journey to NASA

2026-06-18 19:06

Rohit Goeptar, an electromagnetic/radio frequency analyst with NASA’s Launch Services Program at the agency’s Kennedy Space Center in Florida, reviews a radio frequency link budget analysis for NASA’s Nancy Grace Roman Space Telescope from his office. Goeptar is among the engineers and technicians sworn in as new NASA civil servants as part of NASA Administrator Jared Isaacman’s workforce directive to restore technical core competencies within the civil servants ranks.
NASA/Amanda Griffin

Rohit Goeptar was born into a poor family in Suriname, South America, the kind where both parents work three jobs and they still can only provide food and shelter for their family. At around age six, his family moved to California to start a new life. Only two years later, he moved back to South America with his father while his mother stayed in the United States and remarried. When he was 13, he became a U.S. citizen and he and his brothers returned to live with their mother in California. 

At 19, Goeptar joined the U.S. Marine Corps where he spent six years as a technical operator. During one deployment to the Philippines, Goeptar helped set up communication systems for individuals who needed to contact their loved ones after a typhoon ripped through entire towns.  

“I was lost, the Marine Corps gave me an opportunity,” Goeptar recalled.  

While the Marines taught him useful skills, his life had not been the easiest. He lost not one, but two, fathers to suicide, and a short first marriage ended with him being unhoused on the streets of Kissimmee, Florida, for six months. But Goeptar eventually found his way.   

As with most underdog stories, there was another person in the shadows behind his rise to success.  

“Your brain works in mysterious ways,” his now wife told him a short while after they met. She then filled out college applications for him, and he eventually applied to NASA’s Kennedy Space Center in Florida.  

While raising three kids, going to school full-time pursuing a computer engineering and electrical engineering degree simultaneously, Goeptar got the call that changed his life. 

“In spring 2025, I was driving to pick my son up from school when a gentleman from Kennedy calls, telling me he’s seen my resume and do I have time for a quick interview,” Goeptar recounted. 

He pulled on the side of the road and took part in an impromptu job interview. 

Two weeks later, he had an in-person interview with others from Kennedy and two weeks after that, he had a contractor badge at America’s premier spaceport.  

After starting as an intern under the Expendable Launch Vehicle Integrated Support, or ELVIS, contract, then moving to part-time until he graduated from the University of Central Florida (UCF) in Orlando, then full-time at the beginning of 2026, Goeptar was one of the ELVIS contractors who applied and were picked up to become civil servants recently. 

Rohit Goeptar, an electromagnetic/radio frequency analyst with NASA’s Launch Services Program at the agency’s Kennedy Space Center in Florida, reviews a radio frequency link budget analysis for NASA’s Nancy Grace Roman Space Telescope with a colleague.
NASA/Amanda Griffin

Now an employee of NASA’s Launch Services Program, Goeptar works with electromagnetic interference, electromagnetic compatibility, and radio frequency. It is his job throughout the entirety of the mission to analyze and ensure avionic boxes or anything electrically powered doesn’t interfere with any other systems. He also ensures independent systems are compatible when brought together. And finally, he conducts model radio frequency link analysis for different rockets and science demonstrations payloads. These may belong to NASA or commercial partners, and he is responsible for ensuring uninterrupted communication with the ground. In his short time at Kennedy, Goeptar has worked on Sentinel-6B, JPSS-4 (Joint Polar Satellite System), and IMAP (Interstellar Mapping and Acceleration Probe) missions.  

And as far as his wife’s assessment that his brain works differently, he proved that within a year at Kennedy when he noticed an analytical issue his team wasn’t tracking. Once a rocket launches, it does a pitch, yaw, and roll. The analysis the team had been conducting didn’t account for this movement, which meant it wasn’t as accurate as it could be. He presented his solution to the team lead, and it now enables NASA data and partner data to be much more in sync. 

“There is no greater feeling, being able to serve. It’s more than serving the public, it’s serving our country. It’s serving the future of our country,” Goeptar said with tears brimming in his eyes. “Being able to give back to that same government that gave me an opportunity to be where I’m at today. There’s no greater feeling than that.” 

Meanwhile, Goeptar’s 11-year-old takes most of the credit for his landing at the space center, a NASA enthusiast, his son believes he spoke it into existence. 

Rohit Goeptar and children
Rohit Goeptar, an electromagnetic/radio frequency analyst with NASA’s Launch Services Program at the agency’s Kennedy Space Center in Florida, poses for a photograph with his children.
NASA/Rohit Goeptar

“One day he wants to become an astronaut,” Goeptar said with joy on his face. “And I told him I will guide him until the day that I die. Maybe my last mission could be the one my son flies on. I’m not going to stop until that day happens.” 

Rohit’s positive streak continues as he recently was accepted into electrical engineering master’s programs at both Johns Hopkins University, and UCF.  

Learn more about NASA’s missions online: 

https://www.nasa.gov 

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