Use Kepler’s Third Law to find its orbital period from its semi-major axis. The Law states that the square of the period is equal to the cube of the semi-major axis 2=23 In order for the units to be correct, the semi-major axis should be in astronomical units, and the period sho...
The formation of the present configuration of three hot super-Earths in the planet system HD 40307 is a challenge to dynamical astronomers. With the two successive period ratios both near and slightly larger than 2, the system may have evolved from pairwise2:1 mean motion resonances(MMRs). ...
The formation of the present configuration of three hot super-Earths in the planet system HD 40307 is a challenge to dynamical astronomers. With the two successive period ratios both near and slightly larger than 2, the system may have evolved from pairwise 2:1 mean motion resonances (MMRs)...
Watch a distant planet's vast orbit in spectacular time-lapse Scientists don't know what these mysterious planets are made of NASA thinks space is teeming with planets that have gone rogueCheops confirmed the orbital period of the third planet in the star system, the key to figuring out the...
arXiv:gr-qc/0510059v319Dec20057thFebruary2008HowtheorbitalperiodofatestparticleismodifiedbytheDvali-Gabadadze-Porratigravity?LorenzoIorioVialeUnit`adiItalia68,70125,Bari,ItalyKeywords:Dvali-Gabadadze-Porratibraneworldmodel,SolarSystemdynamics,orbitalperiodsAbstractInadditiontothepericentreω,themeananomaly...
That brings us back to the unusual planet’s spin-axis alignment. This image shows 55 Cancri e’s orbital axis relative to the star’s stellar spin axis. 55 Cancri e is that small black dot, and the larger circle represents the star. The red and blue halves of the star repr...
Polaris, the North Star, lies at the end of the handle of the Little Dipper. A few of the stars that make up that constellation can be blotted out with very little moonlight or street lighting. So the best way to find your way to Polaris, based on the experience of meteorologist ...
The sun warms our planet, provides us with light and is crucial to all life on Earth. DrPixel / Getty Images When’s the last time you gazed upward and marveled at the mysterious, life-giving force that is the sun? If you believe the whole staring-at-the-sun-makes-you-go-blind ...
A change in the Earth’s orbit, many scientists believe, transformed the “Green Sahara” into what is now the largest desert on the planet. While scientists are still trying to find out if the slow shift in orbit had rapid or gradual environmental conse
Don't look directly at Leo to find meteors, as the shooting stars will be visible throughout the sky. Make sure to look around and move your gaze to nearbyconstellationsas meteors further from the radiant tend to have longer trains (glowing trails of debris) and are easier to spot. ...