Now you see it, now you don’t. Could climate change affect eclipse viewing? And – how warm has 2017 been?
Weather Around The Worlds, 5/2/17: Extra-Terrestrial Atmospheres; Hurricane Season Starts Early; Drought Disappears; Spring Snow In The Rockies
Atlantic hurricane season gets an early start. And scientists find atmospheres that could support life elsewhere in the solar system — and elsewhere in the Milky Way Galaxy. Are you tuned to the ET channel?
How Astronomers Know the Universe Is Expanding
It’s time for another ‘Ask the Expert’ question from our readers. This reader wants to know how we really know the universe is expanding – Paul Heckert, PhD has the answer.
MegaMoon 2016: The November Full Moon Will Be The Biggest And Brightest In 68 Years
No, it’s not your medical marijuana working overtime. The moon really IS bigger and brighter on November 13 to 15, 2016. It’s the grand finale of a three-body celestial dance.
2015 TB145: Halloween Asteroid Is A Treat For Scientists
An asteroid will pass within 300,000 miles of the earth on Saturday. What’s the chance an object of that size, big enough to foul the atmosphere for years and cause a major extinction, could hit us?
What Are Plasma Density Ducts, and How Did Science Discover Them?
Since the middle of the 20th century, scientists have thought that the plasmasphere contains plasma ducts following Earth’s magnetic field lines. S.T. Loi recently confirmed the presence of these plasma density ducts in Earth’s upper atmosphere.
Journey Work of the Stars: Origin of the Chemical Elements
If the Big Bang didn’t create the heavier elements, where did they come from? Stars are the source of elements beyond hydrogen and helium – including the ones in us.
The Final Asteroid Near Miss Before 2027
In what promises to be a bumper year for the observation of asteroids and dwarf planets, asteroid 2004 BL86 is due for a near miss of Earth on 26 January.
Mysterious Emission from Galaxy Clusters: Is it Dark Matter?
What are the mysterious x-ray emissions coming from galaxy clusters? Could researchers have found signals coming from dark matter?
Kepler-186f: How Astronomers Discovered an Earth-Sized Planet in a Star’s Habitable Zone
How did astronomers find Kepler-186f, an Earth-sized planet in the fabled ‘habitable zone’ – where liquid water can exist?