vania-janet/multiturn-rag-retrieval-data huggingface dataset:
Upcoming Events at All Parks from 5/1/2024 to 5/31/2024
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 Observatory Programs Today 
 Join Fremont Peak Observatory Association (FPOA) Astronomers to view the sun safely through telescopes and later for a 45 minute evening multimedia presentation about As [...] 

 Fremont Peak SP
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Boating Safety
 Drop by our table from 10 am to 12 pm and learn how to be safe out on the water. 

 Bethany Reservoir SRA
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Twilight Hike
 Date: 6/1/2024 Time: 7:45 PM Location: Hunters Parking Lot 
 Meet at Hunters Lot - 7:45 PM. Regular day use fee applies. Bring flashlights, water, and proper footwear 

 Lake Perris SRA
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Old Growth Redwood Walk
 Redwood Tour - Coast Redwoods offer a 100% satisfaction guaran-treed! Every Saturday and Sunday at 12:00pm, we are taking folks on a guided walk through the Redwood Grove to talk about coast redw [...] 

 Henry Cowell Redwoods SP
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Bird Watching
 Bird Watching - We are offering a bird watching program on June 1st at 8:00am. Join us to learn all about life histories, behaviors, field markings, etc. On this 1-mile walk, we will make specific [...] 

 Henry Cowell Redwoods SP
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Campfire Program: Santa Barbara Botanic Garden
 This summer's Campfire Programs are bigger and better than ever! Guest speakers from around Santa Barbara County are joining us to share their expertise on native plants, wildlife and local history. [...] 

 El Capitán SB
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NASA - NSSDCA - Experiment - Details
NASA - NSSDCA - Experiment - Details

Saturday, 25 May 2024

Asteroid Multi-band Imaging Camera (AMICA)NSSDCA ID: 2003-019A-01Mission Name: HayabusaPrincipal Investigator:Dr. Tsuko NakamuraDescriptionThe Asteroid Multi-band Imaging Camera (AMICA) on Hayabusa is designed to collect scientific images and also to be used for optical navigation. The AMICA system consists of a refracting telescope, a filter wheel, a CCD, and associated electronics. The total assembly is mounted on the corner of the bottom-facing deck of the spacecraft near the sampler horn and measures 12.0 x 13.5 x 18.0 cm. AMICA has a field-of-view of 5.7 x 5.7 degrees giving a frame size of about 1 km at 10 km range.

The camera assembly has a mass of 1.74 kg. The optical system is a refracting telescope with five lenses behind a quartz optical parallel window. The focal length is 120 mm and the effective lens diameter is 15 mm (F/8.0). Mounted at the end of the telescope is a filter wheel with eight positions. Each filter is sector-shaped and can be rotated into position behind the telescope. Seven of the filters cover the ECAS system bands: ul, b, v, w, x, p, and zs. There is also a closeup lens (also v-filter) to be used during the sampling phase. After passing through the filter, the image falls on a frame-transfer CCD. The CCD is a back-illuminated multi-pinned phase type, 1024 x 1000 pixels. A single pixel sees 20 arcsec. 30 different exposure times ranging from 5.5 ms to 134 s are available, and there is a ~1 microsecond exposure time to correct readout smear. Four position-angle glass polarizers are mounted on one edge of the CCD chip covering 200 x 200 pixels each. These allow measurement of polarization of the asteroid in the v- and w-bands.

The associated electronics include a computer for data compression and image data processing.
What Are Constellations? | NASA Space Place – NASA Science for Kids
Stars and constellations stay in approximately the same spot for many, many years. They only appear to move in the sky during the year because we are on a moving planet. Because the constellations are in a fixed location, they are often used as landmarks in the sky. Many stars, nebulae, and other objects are named after the constellations they are found in.
For example, meteor showers are named for the constellation where the meteors appear to be coming from. So, for example, the Orionids meteor shower, which occurs in October each year, appear to come from the same direction as the constellation Orion the Hunter.

The constellation Orion is framed by two Perseid meteors on Aug. 12, 2018, in Cedar Breaks National Monument, Utah. The Perseid meteor showers appear to come from the same direction as the constellation Perseus. Credit: NASA/Bill Dunford
Known stars, such as those in well-known constellations, can also be used to navigate. For centuries, sailors used stars to determine their location when out at sea. This is called celestial navigation. NASA astronauts have also trained to use celestial navigation as a backup in case modern navigation systems have trouble.

Watch this video to learn how astronauts on the International Space Station are testing this old method of celestial navigation!

Robotic spacecraft also use maps of the stars to find their way. They carry a star map in their onboard computers and compare these star maps to patterns of stars in images they take. So, in a way, patterns of stars are as helpful today as they were to ancient navigators.

Additional resources:

What’s Up: A Monthly Skywatching Summary
What Are Asterisms?

 	article last updated December 6, 2022
 

If you liked this, you may like:

What Is a Meteor Shower?

What Is a Barycenter?

What Is a Light-Year?

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Create a video game that lets players explore the Red Planet with a helicopter like the one going to Mars with NASA's Perseverance rover!TAGS:MarsMars RoverMars HelicoptercodingprogramminghelicopterMars 2020en Españolvideo tutorialspace travelScratchDesign Your SpacecraftMars Sample ReturnMissionsRoversSpacecraft

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NASA has dozens of robotic spacecraft exploring our solar system – and beyond. So how exactly do we navigate spacecraft that are so far away?

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How Do We Know Where Faraway Spacecraft Are?

NASA has dozens of robotic spacecraft exploring our solar system – and beyond. So how exactly do we navigate spacecraft that are so far away?TAGS:Deep Space NetworkDSNCommunicationsSpace TravelRadioMissionsRoversSpacecraft

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How does measuring Earth's gravity show us where water is and where it's going?

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NASA's Earth Minute: Scale in the Sky

How does measuring Earth's gravity show us where water is and where it's going?TAGS:Climate ChangeEarthMissionsSpacecraftWaterIceWater CycleWeather and ClimateEarth MinuteEarth Dayswot

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Take a closer look at how images from NASA's most powerful space telescope yet are helping to answer some of astronomers' most burning questions.

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10 Things We Can Learn from Webb's First Images

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10 Things We Can Learn from Webb's First Images

Take a closer look at how images from NASA's most powerful space telescope yet are helping to answer some of astronomers' most burning questions.TAGS:ExoplanetsInfraredJWSTJames Webb Space TelescopeWebbWebb telescopespectraspectrumblack holeblack holesnebulanebulaeplanetary nebulawhite dwarfgalaxiesgalaxygravitational lensingredshiftMissionsSpacecraftUniverse

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In this challenge, you will build and program a light-powered device that can move to collect as much light as possible while not overheating.
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Rapid Response | Earthdata
Access 900+ global, full-resolution imagery products via a variety of community standards based set of imagery services, such as Web Map Tile Services (WMTS), Tiled Web Map Service (TWMS) and Keyhole Markup Language (KML). Using these services, the imagery can be rendered in your own web client or GIS application.

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MODIS Subsets have been replaced by Worldview Snapshots.
The new low bandwidth web interface has replaced the Rapid Response MODIS Subsets. In Worldview Snapshots, users can select custom bounding boxes and imagery layers from MODIS on Terra and Aqua satellites and VIIRS on the joint NASA/NOAA Suomi NPP and NOAA-20 satellites. Users will be allowed to save their preferences with a URL and come back to the URL to retrieve their imagery of choice. If you had a Rapid Response subset bookmarked you can go to the links on the Worldview Snapshots Links to Rapid Response Subsets page.

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View and download MODIS and VIIRS near real-time swath images. Data posted approximately 2.5 hours after the observation at the spacecraft.

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The Rapid Response Gallery images are no longer updated. The existing images have been archived in NASA’s Visible Earth. Other captioned imagery is available in NASA’s Earth Observatory and the MODIS Gallery. The same imagery available in Rapid Response, and many more layers, are available in NASA’s Worldview and GIBS.

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Slow down, make time for "Awe Walks"

By Stephen Nett
At Gualala Point Regional Park, when a sunset unrolls its colors over the vast Pacific, the view can be so amazing it can make you stop to watch. In fall, the leaves of the ancient bigleaf maples in Shiloh Ranch Regional Park turn school bus yellow before drifting into blankets beneath the spreading trees. And at Spring Lake Regional Park in April, lines of fluffy baby ducklings appear, bobbing furiously as they try to keep up with mom. 
Humans everywhere respond to nature moments like these with feelings of excitement, joy, wonder. It’s part of our makeup. 
But why?  Why do we react to experiences in the natural world this way? Science has started to explore that question, and is finding such feelings come with some real benefits. 
What is awe?
Among the feelings we experience in nature, one of the more powerful is awe. Imagine standing on the lip of the Grand Canyon, or high up under a clear night sky bursting with stars.
Experts say awe is a response to something so astonishing, beautiful, powerful or vast it exceeds our usual understanding of the world. The feeling is like intense amazement with a slight edge of disorientation or danger. We may get ‘goosebumps’, or chills. 
Awe is also powerful enough, psychologists find, that it can actually shift how we view ourselves.  And that can be very positive, in a number of ways.

A hiker looks out over Sonoma Valley from Gunsight rock in Hood Mountain Regional Park and Open Space Preserve
Feeling good, feeling small
If you’ve ever climbed the trail to catch the westward vista from Gunsight Rock, or camped at Merganser Pond on Hood Mountain and listened to the chorus of hundreds of frogs in the darkness, you may have felt it.  In addition to creating lasting memories, moments of awe can affect us in other ways. For example, people frequently report that feeling awe makes them feel "smaller,” or, of being a small part of something much larger, in a positive way.
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Catalog of Earth Satellite Orbits
A satellite in a circular geosynchronous orbit directly over the equator (eccentricity and inclination at zero) will have a geostationary orbit that does not move at all relative to the ground. It is always directly over the same place on the Earth’s surface.
A geostationary orbit is extremely valuable for weather monitoring because satellites in this orbit provide a constant view of the same surface area. When you log into your favorite weather web site and look at the satellite view of your hometown, the image you are seeing comes from a satellite in geostationary orbit. Every few minutes, geostationary satellites like the Geostationary Operational Environmental Satellite (GOES) satellites send information about clouds, water vapor, and wind, and this near-constant stream of information serves as the basis for most weather monitoring and forecasting.

Satellites in geostationary orbit rotate with the Earth directly above the equator, continuously staying above the same spot. This position allows satellites to observe weather and other phenomena that vary on short timescales. (NASA images by Marit Jentoft-Nilsen and Robert Simmon.)

Because geostationary satellites are always over a single location, they can also be useful for communication (phones, television, radio). Built and launched by NASA and operated by the National Oceanic and Atmospheric Administration (NOAA), the GOES satellites provide a search and rescue beacon used to help locate ships and airplanes in distress.
Finally, many high Earth orbiting satellites monitor solar activity. The GOES satellites carry a large contingent of “space weather” instruments that take images of the Sun and track magnetic and radiation levels in space around them. 
Other orbital “sweet spots,” just beyond high Earth orbit, are the Lagrange points. At the Lagrange points, the pull of gravity from the Earth cancels out the pull of gravity from the Sun. Anything placed at these points will feel equally pulled toward the Earth and the Sun and will revolve with the Earth around the Sun.
Of the five Lagrange points in the Sun-Earth system, only the last two, called L4 and L5, are stable.
James Webb Space Telescope - NASA Science
View Slideshow as Thumbnail Gallery (new tab)See Prior Years Science ImagesFeatured StoryWebb Celebrates First Year of Science With Close-up on Birth of Sun-like StarsFrom our cosmic backyard in the solar system to distant galaxies near the dawn of time, NASA’s James Webb Space…Read the StoryAboutThe Webb MissionWebb is the premier observatory of the next decade, serving thousands of astronomers worldwide. It studies every phase in the history of our Universe, ranging from the first luminous glows after the Big Bang, to the formation of solar systems capable of supporting life on planets like Earth, to the evolution of our own Solar System.Learn MoreThis is a photo of one of the James Webb Space Telescope's primary mirror segments coated with gold by Quantum Coating Incorporated. It's NOT a flight segment, it's the engineering design unit. The photo was taken at BATC by Drew Noel.Photo by Drew NoelAboutWebb's Science GoalsThe James Webb Space Telescope is a giant leap forward in our quest to understand the Universe and our origins. Webb is examining every phase of cosmic history: from the first luminous glows after the Big Bang to the formation of galaxies, stars, and planets to the evolution of our own solar system. Learn about the 4 main science themes for Webb.Learn MoreNASA’s Webb Captures Dying Star’s Final ‘Performance’ in Fine DetailNASA, ESA, CSA, and STScIAboutThe SpacecraftThe Webb Space Telescope is the largest, most powerful and most complex telescope ever launched into space . It's design and development history stretches back before the Hubble Space Telescope was launched.  Learn about the design, the major components and subsystems of Webb and see Webb in 3d in a 3d Solar System.Learn MoreAboutThe International Webb TeamWebb is for the world, and from the world. Thousands of skilled scientists, engineers and technicians from 14 countries (and more than  29 U.S. states, and Washington, D.C.) contributed to the design, build, test, integration, launch, commissioning and operations of Webb. It is a joint NASA/ESA/CSA mission.
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 Explore the cosmos from your computer with this 3-D solar system full of real NASA mission data. Hop on an asteroid. Fly with NASA's Voyager spacecraft. See the entire solar system moving in real time. You control space and time in this desktop app and visualization tool.View in browser
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 This desktop app and visualization tool allows you to explore a 3-D simulation, populated from real spacecraft data, of all planets that have been discovered around other stars.View in browser
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 To keep in contact with the spacecraft exploring our solar system and the universe beyond, JPL operates a network of large radio antennas called the DSN. This online app will let you see what the DSN is up to right now, which antennas are in use, which spacecraft are talking to us, how quickly data is being received, and how long it takes a signal take to get there and back.View in browser
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