from the world's big
Can this end flat-Earth theory once and for all?
- Despite centuries of evidence proving otherwise, there are an alarming number of people around the world who genuinely believe that the earth is flat. Bill Nye The Science Guy, NASA astronomer Michelle Thaller, and Neil deGrasse Tyson strongly disagree.
- From simple experiments like standing at a seashore or looking through a telescope at other planets, to reading about navigation or viewing photos of Earth taken from space, the scientists share several ways that flat Earthers can see the truth for themselves.
- Tyson explains why this trend doesn't qualify as a scientific debate and why it is actually dangerous for people to believe and, even worse, pass on these objectively false ideas.
On other planets, blue skies and red sunsets aren't the norm.
- A NASA scientist created animated simulations of how sunsets likely appear on Mars, Venus, Uranus, and Titan, Saturn's largest moon.
- Sunsets appear differently on other planets because of differences in the atmosphere, which scatters light in unique ways.
- Studying alien atmospheres helps scientists better understand atmospheric processes on Earth, and helps narrow the search for habitable planets.
An illustration of Rayleigh scattering.
Scientificprotocols via YouTube<p>The result is a red sunset, produced by an optical phenomenon called <a href="https://en.wikipedia.org/wiki/Rayleigh_scattering" target="_blank">Rayleigh scattering</a>.</p>
A sunset on Mars. Taken by the Viking 2 Lander on June 14, 1978, this was the first photo of an alien sunset.
NASA<p><a href="https://science.gsfc.nasa.gov/sed/bio/geronimo.l.villanueva" target="_blank">Villanueva</a>'s simulations are now featured on NASA's <a href="https://psg.gsfc.nasa.gov/about.php" target="_blank">Planetary Spectrum Generator</a>, an online tool for studying the atmospheres and surfaces of distant planets. Studying alien atmospheres not only helps scientists better understand atmospheric processes on Earth, but also gives them a clearer idea of which planets may be habitable — or harbor life already.</p>
Solar geoengineering ideas could weaken storms in both hemispheres, scientists find.
It could be the most spectacular annular eclipse of the decade.
- An annular eclipse is a type of solar eclipse where the edge of the Sun remains visible around the Moon.
- The June 21 annular eclipse will occur when the Moon is nearly at its apogee, the point in the lunar orbit when the Moon is farthest away from Earth.
- Only some countries will be able to see the eclipse in person, but several organizations plan to livestream the event.
timeanddate.com<p>The annular eclipse may also provide views of the Sun's chromosphere — a pinkish layer of burning hydrogen — and "<a href="https://en.wikipedia.org/wiki/Baily%27s_beads" target="_blank">Baily's beads</a>," a visual effect of solar eclipses where streams of sunlight travel across the moon's rugged topography. The eclipse will begin at 12:47 a.m. ET and will last several hours, but each specific location on Earth will only be able to see it, weather permitting, for about one minute. </p>
Astrophysicist Michelle Thaller talks ISS and why NICER is so important.
- Being outside of Earth's atmosphere while also being able to look down on the planet is both a challenge and a unique benefit for astronauts conducting important and innovative experiments aboard the International Space Station.
- NASA astrophysicist Michelle Thaller explains why one such project, known as NICER (Neutron star Interior Composition Explorer), is "one of the most amazing discoveries of the last year."
- Researchers used x-ray light data from NICER to map the surface of neutrons (the spinning remnants of dead stars 10-50 times the mass of our sun). Thaller explains how this data can be used to create a clock more accurate than any on Earth, as well as a GPS device that can be used anywhere in the galaxy.