vania-janet/multiturn-rag-retrieval-data huggingface dataset:
Documentary Series: JPL and the Space Age
These are but two of the unexpected discoveries made by this international mission that won over the hearts of millions world-wide while fundamentally altering the way we view our solar system.View episode ›Episode 15: Sky HighThink "NASA," and what comes to mind? Astronauts? Mars rovers? Voyager and the Golden Record? How about Earth?In fact, NASA has been studying and monitoring the health of our home planet for decades, using balloons, aircraft, satellites, and even the International Space Station in the effort. Sky High traces the efforts of NASA’s Jet Propulsion Laboratory to measure greenhouse gases, from the pathfinding science instrument AIRS, through to today’s Orbiting Carbon Observatory 3 aboard the space station.View episode >Episode 16: The Hunt for Space RocksAsteroids and comets are among the oldest objects in our solar system. They mostly reside at safe distances from Earth, but some find their way into our planetary backyard.Every day, the Earth receives visitors from outer space: tons of space debris that mostly goes unnoticed. Some of these “shooting stars,” however, do survive the fiery descent through the atmosphere. That’s what happened to the dinosaurs 65 million years ago when a massive asteroid – or comet – struck Earth. But as the saying goes: "The dinosaurs didn't have a space agency. Fortunately, we do." “The Hunt for Space Rocks” chronicles JPLs pioneering work to understand asteroids and comets as part of NASA’s larger effort to protect our planet from cosmic marauders. From JPL’s effort to mount a mission to study the most famous comet of all – Halley’s comet – to the lab’s current role in planetary defense with its Center for Near Earth Object Studies (CNEOS). The documentary drives home a clear message: We need to find the asteroids and comets before they find us.View episode > 
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Cassini’s Final View of Home
Accessed April 28, 2017.
The Planetary Society A Pale Blue Dot. Accessed April 27, 2017.

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Views of a Distant Earth
On July 19, 2013, NASA spacecraft got not one but two rare and unique views of Earth from opposite ends of the solar system.

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A Cubic View of Earth
The MarCO-B CubeSat snapped its first photo on May 9, 2018, and caught a glance of home.

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On This Day in 2015: An EPIC New View of Earth
From one million miles away, the DSCOVR satellite returned its first view of the entire sunlit side of Earth.

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A View of Earth from Saturn
Seen from a billion kilometers away, through the ice and dust particles of Saturn’s rings, Earth appears as a tiny, bright dot.

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Skywatching FAQ
Sirius is a very bright star, to be sure, but it's only the brightest one in our sky because it's relatively close by in cosmic terms. It's not known what the absolute brightest star in the Universe is, but one of the brightest known stars is called R136a1. It is about 6 million times brighter than the Sun, and it's located about 160,000 light years away.What is the North Star? How do I find the North Star?The North Star, Polaris, is a helpful guide in the night sky for those in the Northern Hemisphere. It would appear directly overhead if you stood at the North Pole, but farther south, it indicates the direction of north. It always stays in essentially the same spot in the sky, and therefore it's a reliable way to determine which way is north at night.Locating Polaris is easy on any clear night. Just find the Big Dipper. The two stars on the end of the Dipper's "cup" point the way to Polaris, which is the tip of the handle of the Little Dipper, or the tail of the little bear in the constellation Ursa Minor.> More about the North StarThe Moon and PlanetsWhy does the Moon have phases each month? Earth's Moon is continuously illuminated on one side by the Sun, so if you were to fly around the Moon in space at any given time of the month, you'd always observe that one half is the sunlit side and the other half is the dark side. But over the course of each month, the Moon orbits around Earth, and our view of the Moon changes. We see it from a slightly different vantage point each night. And even though the total amount of the Moon's surface illuminated by the Sun doesn't change, we see a different view of that half-lit, half-dark object each night. That changing view is what we perceive as the Moon's phases. You might ask why we always see the same side of the Moon if it's actually rotating, which is a great question. The reason for that is because the Moon rotates at the same rate as it orbits our planet – that is, both take about a month.
NASA Tool Gets Ready to Image Faraway Planets - NASA
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FAQs • San Bruno, CA • CivicEngage
You can watch any WatchTVEverywhere program as long as it's on a network you subscribe to in your cable TV package. For example, you must subscribe to HBO through your cable company in order to watch HBO's WatchTVEverywhere programs. 

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Visit the website. Click "Log In" and enter your username and password. Click on the TV Network you want to watch, and you'll see a list of available programs. 

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Yes! We're working with many different programming providers to expand the number of networks, and the number of shows available on WatchTVEverywhere. Registered users are presented with the complete list of all the networks available to them. When new networks are added, you will see them in your menu of available programs when you log in. 

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Credits

Please give credit for this item to: NASA's Scientific Visualization Studio

	
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Release date

	
	This page was originally published on Sunday, December 9, 2018.
	
	
	This page was last updated on Wednesday, November 15, 2023 at 12:12 AM EST.
	

Datasets used in this visualization

	CelesTrak Spacecraft Orbit Ephemeris
	
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Type: Ephemeris 
Dates used: 06/2018 

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Views of a Distant Earth
Views of Earth from distant planets are rare because our planet is so close to the Sun. Sunlight would damage the spacecraft's sensitive imagers, so they are rarely pointed homeward. On July 19, however, Cassini was positioned so that Saturn blocked the Sun’s light while Earth was within the spacecraft’s field of view. Sunlight glimmers around the giant planet’s limb and lights its icy, dusty rings. The sunlit Earth is light blue. The Moon is a faint white dot to the side, but is more clearly visible in the narrow-angle camera view.
Cassini was launched in 1997 to study Saturn and its moons and rings. The July 19 image that includes Earth was part of a wider mosaic of the Saturn system as it was backlit by the Sun. This view will allow scientists to see particles and patterns in Saturn’s rings that are not often visible. The mosaic will take weeks to compile.
On the other side of the solar system, MESSENGER (Mercury Surface, Space, Environment, Geochemistry, and Ranging) was looking for potentially dim, small moons around Mercury when it acquired the lower, black and white image. The sensor required a long exposure time to capture these dim objects, which means Earth and Moon are overexposed. They appear exceptionally bright and large when, in reality, both are less than a pixel in size in this image.
“Cassini’s picture reminds us how tiny our home planet is in the vastness of space, and also testifies to the ingenuity of the citizens of this tiny planet to send a robotic spacecraft so far away from home to study Saturn and take a look-back photo of Earth,” said Cassini project scientist Linda Spilker. That observation holds true for the view from Mercury, as well.
Cassini image courtesy NASA/JPL-Caltech/Space Science Institute. MESSENGER image courtesy NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington. Caption by Holli Riebeek.

On July 19, 2013, NASA spacecraft got not one but two rare and unique views of Earth from opposite ends of the solar system.
Image of the Day for July 24, 2013

Instrument:
Cassini

Appears in this Collection:
Earth from Afar
Earth Observation With Satellite | Terra
Leadership
      Dr. Kurtis Thome
      Dr. David J. Diner
      Dr. James R. Drummond
      Dr. Michael D. King
      Mr. Michael J. Abrams
      Dr. Norman G. Loeb
      Dr. Si-Chee Tsay
      Mr. Robert Wolfe
      Mr. Wynn J. Watson
      Dr. Nyssa Rayne

Terra Instruments:
 

ASTER

CERES

MISR

MODIS

MOPITT

Why Citizen Science for Precipitation?
Additional Resources
Earth Observation With Satellite
Step By Step: Backyard Observation
Tools and Data Quick Reference

Features

Home › Private: Citizen Science › Why Citizen Science for Precipitation? › Earth Observation With Satellite

Earth Observation With Satellite

How successfully do rain gauges catch rainfall patterns? Do the satellites record the same patterns of data as the ground-based gauges? How many gauges are required in order to observe regional patterns in rainfall? Scientists compare measurements from rain gauges with satellite measurements to answer these and other related questions. By increasing the number of rain gauge measurements, citizen scientists can help increase the overall accuracy and precision of space-based precipitation monitoring. Using the June 2008 Midwest flood event, this section illustrates how to explore satellite data and rain gauge data together to answer questions about regional rainfall.
For this example, we are going to use a station in Monroe County, in south-central Indiana. The station, near Indianapolis, Indiana, received a record-breaking period of rainfall from June 2-12, 2008. This extreme rainfall event subsequently caused intense flooding in the Ohio and Lower Mississippi watersheds.
Part 1. Observer (Ground-based) Data
How to find a station of interest in CoCoRaHS.
Step 1. Access the map of the area that you are interested in.

Launch the CoCoRaHS website
Once the site has loaded, click on the word, “maps”.

Once the daily maps page loads, select the “Station Number Maps” link from the list of map types. (last one in the list)
Under map location title, use the pull down menu to select “stations,” choose your state of interest.
Collection - Earth from Afar
A new video explains the circumstances that gave rise to the famous Apollo “Earthrise” photo while recreating the experience with modern data.
Published Dec 24, 2013
 

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Atmosphere
Land
Water
Snow and Ice
Remote Sensing

Image

Views of a Distant Earth
On July 19, 2013, NASA spacecraft got not one but two rare and unique views of Earth from opposite ends of the solar system.
Published Jul 24, 2013
 

Image of the Day
Remote Sensing

Image

A Different View of Home
NASA’s STEREO-B spacecraft observed Comet PanSTARRS and Earth from the far side of the Sun in March 2013.
Published Mar 31, 2013
 

Image of the Day
Heat
Remote Sensing

Image

A Voyager Far From Home
After 35 years, the Voyager 1 space probe is farther from Earth than any manmade object has ever flown.
Published Sep 5, 2012
 

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Atmosphere

Image

Students Look Homeward from the Moon
Middle school students took this picture of our planet from the far side of the Moon in mid-March 2012.
Published Apr 8, 2012
 

Image of the Day
Remote Sensing

Image

What did John Glenn see?
Fifty years ago today, the first American to orbit the planet took this photo of home.
Published Feb 21, 2012
 

Image of the Day
Human Presence
Remote Sensing

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A Different View of Home
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Sun-Earth Selfie
The STEREO A spacecraft looked back from the far side of the Sun to capture an image of Earth and Mercury.

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Remote Sensing

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Far Side of the Sun
For the first time in history, the world has a full view of the far side of the Sun and of the entire 360-degree sphere at once.

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Heat

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First 3-D Vews of the Sun

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First 3-D Vews of the Sun

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HEASARC Help Desk, Feedback, and Frequently Asked Questions (FAQ)
the maps or time-series with which you may be more familiar, use our
FTOOLS package. Many
of our high-level software tools 
will do this for you automatically!

Which X-ray satellites have looked at my favorite source?

You can use either Xamin or 
Browse to search the HEASARC's collection of
observation catalogs
for individual satellites, or the basic interface can search all of the
satellites for which we have archival data in a single step.

Which satellite can do the science I'm interested in?

The HEASARC maintains extensive documentation for each mission
and has a number of tables which compare capabilities.

Cosmological Microwave Background (CMB)

What CMB data are available from LAMBDA?
A growing collection
 of CMB data, software and web tools is available from LAMBDA,
ranging from data from NASA's two flagship CMB missions COBE and WMAP, to 
data from balloon-based
experiments such as 
BOOMERanG, to data from ground-based facilities such as

SPT and 
ACT. 

General, Educational and Public Outreach

Where can I find nice images for my presentation?

A growing collection of high-energy science
results (images, spectra and light curves) is available.
High-resolution versions of these images are being added regularly. 
Also visit the HEASARC Picture of the Week and
Astronomy Picture of the Day sites.

Where can I find teaching resources for my high school or college
course?

The HEASARC's outreach programs provide
many free educational resources for all levels. Images sorted by object type and by mission are available, as well as educational
resources like the Imagine the
Universe! site. Our newly-added 
resources for scientists provides links to presentations given by your 
peers and at various x-ray astronomy courses.

How do I get to the HEASARC?

If you wish to visit the HEASARC, send an email message to
visitor@athena.gsfc.nasa.gov. Please let us know when you wish to visit,