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.
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.
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?
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.
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.
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.
What are the mysterious x-ray emissions coming from galaxy clusters? Could researchers have found signals coming from dark matter?
How did astronomers find Kepler-186f, an Earth-sized planet in the fabled ‘habitable zone’ – where liquid water can exist?
What will happen when plasma from the first major solar storm of 2014 hits Earth? A dramatic display of Aurora Borealis, or Northern Lights.
The B612 Foundation has a mission: To keep an eye out for asteroids that might hit the Earth. Are we really in danger from space’s flying objects?