NASA’s THEMIS mission has overturned a longstanding belief about the interaction between solar particles and Earth’s protective magnetic field. This new discovery could help scientists predict when the solar storms that can...

Practice REAL problems from actual past IIT/JEE exams with Professor Dave!

Parodying the classic sea shanty "The Wellerman," “The Solar Wind: A Heliophysics Sea Shanty” illuminates one of the primary connections between...

Dr. David Sibeck explains the instruments on the twin Van Allen Probes (formerly the Radiation Belt Storm Probe, RBSP).



The Van Allen Probes will explore the Van Allen Radiation Belts in the Earth's magnetosphere. The...

How do scientists plan to get astronauts to Mars when space radiation is so strong? What can be done about it?

Black carbon, composed of tiny particles of soot, is produced whenever organic substances like fossil fuels, firewood or coal is incompletely burned. These particles are polluting the air and causing serious health and environmental...

NASA scientists answer some common questions about the sun, space weather, and how they affect the Earth. This is a two-part series.



Part One

addresses:

1. Wh

at is space weather?

2. Wh

at are...

For the longest time, space seemed like just a big, nearly empty place. However, as we learned more about the universe around us, we discovered other planets orbiting our Sun, and even planets that orbit other stars...

On March 17, 2015, an interplanetary shock – a shockwave created by the driving force of a coronal mass ejection, or CME, from the sun – struck the outermost radiation belt, triggering the greatest geomagnetic storm of...

Five years after NASA’s MAVEN spacecraft entered into orbit around Mars, data from the mission has led to the creation of a map of electric current systems in the Martian atmosphere....

Introductory video to the hydrogen line spectrum, which in part led to the initial development of quantum mechanics.<br/>

Simulation courtesy of J. Raeder/UNH.



This short video features commentary by David Sibeck, project scientist for the THEMIS mission, discussing a visualization of reconnecti

on fronts.

Taking advantage of an...

This episode explores the complexity of atmospheric aerosols- how they impact climate and how researchers study them. Glory's Aerosol Polarimetry Sensor and Cloud Camera will provide an unprecedented data set for helping scientists...

This video explains the concept of thermal conduction, which is the transfer of thermal energy through solids. The video discusses the three main mechanisms of thermal energy transfer, thermal conduction, convection and thermal...

The video discusses the factors that affect the rate of chemical reactions. The first factor is the number of collisions with enough energy to react. Other factors include changing the pressure, concentration, surface area, and...

Learn about the features of the ionosphere! This little-explored region exists between space and Earth. It is home to the aurora, the international space station, a variety of satellites, and radio communication waves. We...

Aerosols are small solid or liquid particles suspended in the air that affect climate change directly through interactions with solar radiation. Aerosols affect climate indirectly by changing the micro- and macro-physical...

Brr, it's so cold today! Could it get any colder? Is there a coldest possible temperature? Yes, there is! That seems strange, but now we know that temperature is just a measure of kinetic energy, so zero kinetic energy must mean zero...

On March 20, 2009, at 1:00 p.m. EDT, join a panel of scientists for a live Sun-Earth Day Webcast. During the webcast, scientists will share discoveries about the sun, while students monitor the sun and prepare their own space weather...

Senior Project Scientist Tom Moore outlines the three instrument suites onboard the four MMS spacecraft.



On March 12, 2015, NASA plans to launch the Magnetospheric Multiscale, or MMS, mission. MMS consists of four...

In this video, the teacher explains the concept of matter and its composition. The video highlights how different types of matter make up various objects in our daily lives, such as wood, paper, glass, and plastic.



This video...

NASA scientists answer some common questions about the sun, space weather, and how they affect the Earth. This is a two-part series.



Part Two

addresses:

1. Do all flares and CM

Es affect the...

The video discusses the concept of convection as a mechanism of thermal energy transfer in fluids. It explains how convection currents are formed due to temperature differences and particle movement in liquids and gases. The video also...

Practice REAL problems from actual past IIT/JEE exams with Professor Dave!