Monthly Stargazing Calendar for December 2015
On the night of December 13 and 14 the Geminids meteor shower will peak. It is considered by many to be the best shower in the heavens, producing up to 120 multicolored meteors per hour at its peak. This is why it is known as the king of meteor showers. Some meteors can also be seen anytime from December 7 to 17.
Monthly Stargazing Calendar for November 2015
On the night of November 5 and 6 we will witness the peak of the Taurids meteor shower. It is a long-running minor meteor shower producing only about 5-10 meteors per hour at peak, while some meteors can also be seen from September 7 to December 10. However it is unusual in that it consists of two separate streams. The first is produced by dust grains left behind by Asteroid 2004 TG10. The second one is produced by debris left behind by Comet 2P Encke.
Monthly Stargazing Calendar for October 2015
On October 8 we will witness the Draconids meteor shower. It is a minor meteor shower producing only about 10 meteors per hour originating from dust grains left behind by comet 21P Giacobini-Zinner, which was first discovered in 1900. The Draconids is an unusual shower in that the best viewing is in the early evening instead of early morning like most other showers.
Monthly Stargazing Calendar for November 2013
Earlier this month there were two major astronomical events: a hybrid solar eclipse on November 3rd and the Taurids meteor shower peak on the night of November 4 and 5. If you missed those two events, don't worry, there are two more coming up this month!
Monthly Stargazing Calendar for October 2013
Tonight (October 7 - 8) is the peak of the Draconids meteor shower. It is a minor meteor shower producing only about 10 meteors per hour during the peak, but some meteors can be seen one day before and after the peak. It originates from dust grains left behind by comet 21P Giacobini-Zinner, which was first discovered in 1900.
The Lincoln MKZ’s Panoramic Sunroof
The 2013 Lincoln MKZ offers sleek design and a panoramic sunroof option that adds luxury, light, and open-air vibes without sacrificing safety.
How to Run A Memory Test
There are a number of sites on the web which were created to assist computer users in running memory tests and debugging memory problems with their personal computers. They will help you to automatically complete these tests, but if you must do them manually, here are some tips.
Earth’s First Trojan Asteroid discovered by NASA’s WISE
NASA's WISE mission discovered asteroid 2010 TK7, an Earth Trojan, in a stable orbit around a Lagrangian point, possibly a future space destination.
Ara Constellation
Explore the Ara constellation with its mythological roots, notable stars like Beta Arae, a star with planets, and fascinating deep-sky objects.
Aquila Constellation
Discover Aquila, the eagle, in Greek mythology. Explore its notable stars like Altair and Alshain, as well as intriguing deep-sky objects.
Aquarius Constellation
Explore the constellation Aquarius, the water-bearer. Discover its mythology, notable stars like Gliese 876, and captivating deep-sky objects like Messier 2.
Non-Rocket Spacelaunch – Advantages and Difficulties of a Launch Loop
Unlike conventional rockets, launch loops can have many launches per hour, independent of weather, and are not inherently polluting. Rockets create pollution such as nitrates in their exhausts due to high exhaust temperature, and can also create greenhouse gases depending on propellant choices. Launch loops require power in the form of electricity and as such it can be clean.
Non-Rocket Spacelaunch – Launch Loop
A launch loop (also known as a Lofstrom loop) is a proposed design for a very efficient non-rocket spacelaunch method. It is a much simpler concept than the space elevator, but still more complex than tether propulsion systems such as the rotovator.
Non-Rocket Spacelaunch – Tether propulsion in fiction
This is the fourth and final part of the tether propulsion article of the non-rocket spacelaunch methods article series. This post will focus on references to the tether propulsion concept in fiction. The most prominent science fiction novels on the subject include the following.
Non-Rocket Spacelaunch – Tether propulsion safety issues
The use of tethers in space poses many challenges and safety issues. This third part to the tether propulsion article will focus on those issues. A lot of the challenges and safety issues of a space tether system are similar to those of a space elevator described in a previous article, but some are unique to the space tether concept.
Non-Rocket Spacelaunch – Tether satellite missions
This is the second part to the article about tether propulsion. It will focus on space missions that tested tethers in space. The first such mission took place in 1966. Gemini 11 deployed a 30m tether connecting it to the Agena target vehicle. It created a small amount of artificial gravity (0.00015 g) by spinning the two spacecraft.
Non-Rocket Spacelaunch – Tether propulsion
Tether propulsion consists in using long, very strong cables (known as tethers) to change the velocity of spacecraft and payloads. The tethers may be used to initiate launch, complete launch, or alter the orbit of a spacecraft. This form of propulsion would be significantly less expensive than spaceflight using modern rocket engines.
Non-Rocket Spacelaunch – Space Elevators in Fiction
This is the fourth and final part of the space elevator article of the non-rocket spacelaunch methods article series. This post will focus on references to the space elevator concept in fiction. The first mention of anything remotely similar to a space elevator was the beanstalk in the children's fairy tale called Jack and the Beanstalk, published in 1807.
Non-Rocket Spacelaunch – Extraterrestrial Space Elevator Concepts
Space elevators, a futuristic concept, could be adapted for various celestial bodies: Mars, the Moon, and even asteroids, they promise a revolution in space access.
Non-Rocket Spacelaunch – Space Elevator Safety Issues
The space elevator is a gigantic concept and as such it has many safety issues that would have to be resolved before construction begins. A space elevator would present a navigational hazard, both to aircraft and spacecraft.
