This page contains a selection of interesting multimedia used as part of presentations or publications. Most of the content is original from the PHL, but other sources are credited.
This is a visualization of the main exoplanets detection techniques. The animations show how the visual appearance of a star is affected by the presence of planets. The effect of the planets on their stars were exaggerated for clarity since they are too weak to be visible by the naked eye. The frames show the number of planets detected and measured properties by each technique. The actual planets are only visible, if possible (e.g. only young hot planets far from their star), with the direct method technique. The twinkling of the stars is shown for comparison to illustrate how the atmosphere obscure the presence of planets. This animation is part of a public lecture on exoplanets.
Here are infographics summarizing the 'exoplanet zoo' out there. Figure 1 is a simplified version of exoplanet types based on size while Figure 2 uses both size and temperature for classification. These plots were prepared for the 1,000 exoplanet count celebration.
Figure 1. Types of exoplanets according to the PHL's Exoplanet Classification system. The red numbers in each category correspond to those already confirmed (total of 990). Many more are still waiting for confirmation.
Periodic Table of Exoplanets for current 990 confirmed exoplanets (17 planets are not included because there is not enough information to classify them). Explanations and any newer version are available here
These are high resolution map (8000x4000px) of the night sky showing the stars with exoplanets. Click the images for the high resolution versions. The maps are suitable for poster printing up to 40" x 20" (~100x50 cm) at 200 dpi. Image credits: PHL @ UPR Arecibo and Jim Cornmell.
Figure 1. Nearest stars with exoplanets within 100 light years from Earth. There are 117 stars with one or more exoplanets within this distance. Stars with known exoplanets are color-coded with their spectral type (see legend). The rest of the stars are black.
All stars with confirmed exoplanets (701 stars with 912 exoplanets). Two notable clusters are the surveys of Kepler in Cygnus-Lyra, and MOE and OGLE in Sagittarius, the galactic center. Stars with known exoplanets are color-coded according to their distance from Earth, red closer, violet farther (see legend). Any beyond 1000 light years are colored as dark violet. The rest of the stars are black. Only those stars within 100 light years are labeled.
Figure 3. Same as figure 2 but with a dark night sky background.
This plot shows the extension of the recently redefined Habitable Zone around F, G, K, and M stars. The Warm 'Habitable' Zone is divided into a narrower 'Conservative Habitable Zone' (light green) and a wider 'Optimistic Habitable Zone' (dark green). Earth is at the inner edge of the 'Conservative Habitable Zone.' CREDIT: PHL @ UPR Arecibo.
is the NASA's first mission capable of finding Earth-size planets. This big infographic shows some important figures of the mission up to March 2013. Click for a larger image. Credit: Aliona Voitenko.
Esta imagen de Puerto Rico combina fotos de NASA Blue Marble
y Black Marble
para crear una imagen amplificada de la iluminación nocturna en Puerto Rico. Los fuegos artificiales serían unos puntos a esta escala, pero fueron añadidos y exagerados en tamaño porque así lo celebramos en nuestra isla. ¡Feliz Año 2013!
English Caption: This image of Puerto Rico combines photos from NASA Blue Marble and Black Marble to create an amplified image of the night illumination of Puerto Rico. The fireworks would barely occupy dots at this scale, but were added and exaggerated in size because that is the way we celebrate it in our island. Happy New year 2013!
This is an excellent infographics of the nearest 53 star systems. Here
is a more detailed list of 270 stellar systems within 10 parsecs. CREDIT: Karl Tate, Space.com
The 'X-mas Planets' is a collage of computer generated images of potentially habitable worlds created by the Planetary Habitability Laboratory (PHL) over a section of an image of the De Mairan’s Nebula (Messier 43) taken by the Hubble Space Telescope. Earth is at the top right, Mars at the top center. This image was created to celebrate the first year, December 5, 2012, of the PHL's Habitable Exoplanets Catalog. The title of the picture was unintentional but after looking at the final product it reminded us of X-mas ornaments. Since this was on December that seemed an appropriate name. The image has been very popular in the web. Here is a high resolution version. Credit: PHL @ UPR Arecibo (phl.upr.edu), ESA/Hubble, NASA.
Dwarf planet Pluto is so small and far away that it only shows as a featureless dim dot in any ground or space telescope. Only NASA's New Horizon
space mission will get close enough to Pluto on July 2015 to observe its surface details. Now consider the stars, many are even larger than the Sun but they are much farther away. Are the apparent size of the stars larger than Pluto? They seem bigger because we can see them with the naked-eye, but in fact the apparent size of most stars are much smaller than Pluto (see figure below). It is their brightness than make them look much larger and fuzzier to our eyes and our telescopes.
If we barely see surface features on Pluto
, neither on any exoplanet, which are much smaller and dimmer than their parent stars. Only those few exoplanets bright enough
, because they are young and hot, can be directly seem in telescopes as faint points. Most are to dim and out shined that and are only detected because they affect the star light in some subtle ways.
Caption: Best image of the Pluto-Charon system
ever taken by a ground observatory. The image was taken by the Gemini North
telescope on July 2012 with an average resolution of 20 milliarcseconds (mas). We added for comparison the apparent size of Pluto and Charon (dotted circles) with those of four known stars (not including the star glare which make them look much bigger). The size of Epsilon Eridani is comparable to detecting a 5 meter diameter object on the Moon from Earth, a nearly impossible activity. Exoplanets are much smaller. CREDIT:
PHL @ UPR Arecibo, Gemini Observatory/NSF/NASA/AURA
This excellent image compilation by Mike Malaska
shows the planetary surfaces of Asteroid Itokawa, the Moon, Venus, Mars, Titan, and Earth. So our technology has been in the surface of five planetary bodies besides Earth. Well, not counting Eros
(not originally a lander), Comet Tempel 1
(a 'crasher'), and Jupiter
(not a surface to land). Why Earth is shown as an ocean? With a 71% global coverage this is the most common surface type of our planet.
Image Credits: Asteroid Itokawa [Hayabusa]: ISAS / JAXA / Gordan Ugarkovic , Moon [Apollo 17]: NASA, Venus [Venera 14]: IKI / Don Mitchell / Ted Stryk / Mike Malaska, Mars [Mars Exploration Rover Spirit]: NASA / JPL / Cornell / Mike Malaska, Titan [Cassini Huygens]: ESA / NASA / JPL / University of Arizona, Earth: Mike Malaska, Composition by Mike Malaska.