The seven Earth-size planets of TRAPPIST-1 are all mostly made of rock, with some having the potential to hold more water than Earth, according to a new study. original
Archive | Kepler
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Multi-planet System Found Through Crowdsourcing
A system of at least five exoplanets has been discovered by citizen scientists through a project called Exoplanet Explorers. original
Kepler-90 System Planet Sizes
The Kepler-90 planets have a similar configuration to our solar system with small planets found orbiting close to their star, and the larger planets found farther away. original
Kepler-90 Planets Orbit Close to Their Star
Kepler-90 is a Sun-like star, but all of its eight planets are scrunched into the equivalent distance of Earth to the Sun. The inner planets have extremely tight orbits with a “year” on Kepler-90i lasting only 14.4 days. In comparison, Mercury’s orbit is 88 days. Consequently, Kepler-90i has an average surface temperature of 800 degrees […]
Could Kepler-90 Have More Planets?
This graphic shows that a small area around the Kepler-90 system, on the left, has been searched by the Kepler space telescope. Compared to our solar system, where we know of planets farther out, it is possible that Kepler-90 has even more planets. If planets (in the blue area) do exist, they probably would not […]
Planetary Systems by Number of Known Planets
This figure shows the number of systems with one, two, three, planets, etc. Each dot represents one known planetary system. We know of more than 2,000 one-planet systems, and progressively fewer systems with many planets. The discovery of Kepler-90i, the first known exoplanet system with eight planets, is a hint of more highly populated… original
Exoplanet Discoveries
Today, as shown in figure 10, we know of over 3,500 confirmed exoplanets, with more than 2,500 of those found in the Kepler data. These planets range in size from larger than Jupiter to smaller than Earth. In just a couple decades, thanks largely to Kepler, we have gone from suspecting exoplanets existed to knowing […]
Kepler’s Gaze Shifts Toward New Targets — Supernova, the ‘Beehive Cluster’ and Earth
The sixteenth observing campaign of the Kepler spacecraft’s K2 extended mission is now underway. The campaign has prospects for discoveries among 30,000 objects in the direction of the constellation Cancer. The cartoon illustrates some of the objects of interest that Kepler is observing for 80 days, from Dec. 7 to Feb. 25, 2018. original
Kepler’s Gaze Shifts Toward New Targets — Supernovae, the ‘Beehive Cluster’ and Earth
The sixteenth observing campaign of the Kepler spacecraft’s K2 extended mission is now underway. The campaign has prospects for discoveries among 30,000 objects in the direction of the constellation Cancer. The cartoon illustrates some of the objects of interest that Kepler is observing for 80 days, from Dec. 7 to Feb. 25, 2018. original
The Scientific Quest to Explain Kepler’s Most Enigmatic Find
Some 1,500 light years from Earth, a mystery of stellar proportions is playing out. The world has the chance to watch, as the scientific process and the mystery continue to unfold. original
What Does Kepler Have Its Eye On?
Kepler’s K2 Mission Continues to Eye New Patches of Sky original
Scientists Improve Brown Dwarf Weather Forecasts
Researchers have a new model for explaining how clouds move and change shape in brown dwarfs, using insights from NASA’s Spitzer Space Telescope. original
An Eclipse by Any Other Name: Doing Science with Transits and Occultations
While the mechanics of a total solar eclipse are actually rather mundane, different flavors of this phenomenon make some very sophisticated science possible. original