silversarcasm:

if you had to drop out of a class you are not a failure

if you had to take time off school you are not a failure

if you had to leave school for good you are not a failure

your worth is not determined by academia and this goes doubly so for disabled people and others for whom school is set against them

(via thatswhatsuuup)

Notes
72292
Posted
5 days ago

spaceplasma:

Saturn’s Rings and Enceladus

Saturn’s most distinctive feature is the thousands of rings that orbit the planet. Despite the fact that the rings look like continuous hoops of matter encircling the giant planet, each ring is actually made of tiny individual particles. Saturn’s rings consist largely of water ice mixed with smaller amounts of dust and rocky matter. Data from the Cassini spacecraft indicate that the environment around the rings is like an atmosphere, composed principally of molecular oxygen.

The ring system is divided into 5 major components: the G, F, A, B, and C rings, listed from outside to inside (but in reality, these major divisions are subdivided into thousands of individual ringlets). The F and G rings are thin and difficult to see, while the A, B, and C rings are broad and easily visible. The large gap between the A ring and and the B ring is called the Cassini division. One of Saturn’s moons, namely; Enceladus is the source of Saturn’s E-ring. The moon’s geyser-like jets create a gigantic halo of ice, dust, and gas that helps feed Saturn’s E ring.

Enceladus has a profound effect on Saturn and its environment. It’s the only moon in our solar system known to substantially influence the chemical composition of its parent planet. The whole magnetic environment of Saturn is weighed down by the material spewing from Enceladus, which becomes plasma — a gas of electrically charged particles.  This plasma, which creates a donut-shaped cloud around Saturn, is then snatched by Saturn’s A-ring, which acts like a giant sponge where the plasma is absorbed. 

Credit: , NASA/JPL/SSI

(via startalkradio)

Notes
1000
Posted
5 days ago
dynastylnoire:

starbombpotter:

GUYS COLORADO NEEDS SOME HELP
There is a bill about to be passed called Amendment 67 that is the ban on ALL abortions. THIS INCLUDES IF THE MOTHER WOULD DIE OR IF SHE WAS RAPED. THIS BILL ALSO CAN MAKE POLICE INSTIGATE ALL NON-LIVE BIRTHS (MISCARRIAGE/STILLBORN).
If you want more information, the article is [here] and they have an indigogo page [here] to help fund the stop of Amendment 67.
TUMBLR PLEASE BLOW THIS UP. PLEASE IM BEGGING YOU

BOOOOOOOOOOOOOOOOOOOST

dynastylnoire:

starbombpotter:

GUYS COLORADO NEEDS SOME HELP

There is a bill about to be passed called Amendment 67 that is the ban on ALL abortions. THIS INCLUDES IF THE MOTHER WOULD DIE OR IF SHE WAS RAPED. THIS BILL ALSO CAN MAKE POLICE INSTIGATE ALL NON-LIVE BIRTHS (MISCARRIAGE/STILLBORN).

If you want more information, the article is [here] and they have an indigogo page [here] to help fund the stop of Amendment 67.

TUMBLR PLEASE BLOW THIS UP. PLEASE IM BEGGING YOU

BOOOOOOOOOOOOOOOOOOOST

(via galaxyclusters)

Notes
81910
Posted
5 days ago

spaceplasma:

Solar wind and Mars’ Atmosphere

Mars does not have a single unified magnetic field like Earth. It has smaller, more fractured fields which cover the planet and have different intensities and polarities. The absence of magnetic protection allows the supersonic solar wind flow to directly interact with the Martian ionosphere.

The Sun constantly emits high-energy photons (gamma rays) and when one of these photons enters the atmosphere of Mars, it can crash into a molecule, knocking loose an electron and turning it into an ion. These ions can then crash into other molecules and fling atoms everywhere. Some of these atoms can be knocked, or sputtered, into space, causing atmospheric loss. The amount of ionization in the ionosphere varies greatly with the amount of radiation received from the Sun. When the velocity of the solar wind increases, the Martian ionosphere is compressed and the ionopause (a boundary layer between the ionosphere and the solar wind) is displaced to lower altitudes.

Further Reading:

Credit: Chris Smith (HTSI), NASA/Nagoya University

(Source: youtube.com, via galaxyclusters)

Notes
471
Posted
5 days ago