Showing posts with label Saturn. Show all posts
Showing posts with label Saturn. Show all posts

Friday, September 30, 2016

Space - A Cosmic Ocean Elon Musk Intends to Sail

Speaking in front of a capacity crowd at the 67th International Astronomical Congress in Guadalajara, Mexico, SpaceX founder, CEO and chief designer, Elon Musk, boldly unveiled his futuristic plans for sending humans to Mars.

In his much anticipated speech entitled "Making Humans a Multiplanetary Spacies," the billionaire outlined his ideas for colonizing the red planet in his trademark thinking-out-loud style of speaking.
Musk speaking in front of a capacity crowd the the International Astronomical
Congress on September 27. credit: bloomberg.com

He began by asking the question, "Why Mars?", before explaining that solar system real-estate is limited and that finding a prime spot is not as easy as people may think.

Musk stated that if a manned launch to Mars were to take place right now, a seat on board that ship would cost an astronomical $10bn per person. In other words, the system does not yet exist.

However, Musk's mantra has and always will revolve around driving down the cost of getting to space and making it accessible to all.

"The cost of a Mars ticket should equal the median cost of a house in the United States.. which is about $200,000" he went on to say. "You can't create a self-sustaining civilisation on Mars if the price is ten billion dollars per person."

This Musk explained, could only be achieved by addressing four key issues. These issues are:

-Full reusability
-Refilling in orbit
-Propellant filling on Mars
-Using the right propellant

If he succeeds in doing so, Musk believes he will be able to reduce the cost per tonne to Mars by five million percent, and in the process, facilitating the mass landing of around a million or so humans on our nearest neighbour by the 2060s.

While proclamations of slashing ticket prices to Mars were greeted with enthusiastic whoops and hollers from the crowd, the question that everyone wanted answered, was what exactly will this interplanetary space system look like?

Standing in front of a fifteen-foot-tall image of Mars, occasionally Musk would turn to catch a subtle glimpse of the revolving red globe, as if to remind himself that Mars was still there - that it wasn't so far away.

Getting to Mars
Blasting off atop a 254-foot booster from the same launch used on man's first voyage to land a man on the Moon, SpaceX's "Planetary Spaceship"(yet to be officially named, but Musk admitted that he would probably name the first ship "Heart of Gold" as a tribute to the ship used in "The Hitchhikers Guide to the Galaxy") would firstly be delivered into a preliminary parking orbit around the Earth.
SpaceX System Architecture credit: SpaceX

The booster, similar in profile of returning a Falcon-9 first stage to Earth, would then return directly to the launchpad, refuel its tanker, and launch back up to the parked manned vehicle in orbit.

This refueling process would be repeated four more times before the interplanetary ship would get the green light to rendezvous with the red planet.


In what he described as something straight out of Battlestar Galactica, Musk said he hopes to include not one, not two, but a thousand Mars ships in a single fleet, with up to two hundred people per spacecraft.

The Planetary Spaceship will use its aerodynamic lift ability to enter the Martian atmosphere, and will come to a soft landing on the surface of the planet using its propulsive rocket system.

In theory, this would allow the Spaceship to land on any rocky body in the solar system, and provided there would be fueling stations along the way, it would result in humans gaining access to almost anywhere in the solar system.

The people in these craft would require only "a few days of training" before being certified to fly. If you arrive at the place and decide you don't like it as much as you thought and yearn to come home - don't worry! With the billionaire planning on sending fleets to Mars roughly every two years, there'll be another ship along shortly to bring you back to mother Earth.

As far as safety is concerned, for the first flights of the Interplanetary Spaceship on a journey to Mars, Musk offered the grim prediction that "The risk of fatality will be high."

Throughout the speech, Musk shied away from setting any concrete dates for accomplishing the above goals, estimating that it will take anywhere between forty and one hundred years to develop a self-sustaining species from the first ship's rendezvous.

What happens now?
As a space enthusiast, Musk excites me with his audacious plans to turn humans into a multiplanetary species. The fact that someone is even thinking about doing so, let alone already investing tens of millions of dollars in order to make it a reality brings me a profound sense of joy for the present, and quiet optimism for the future.

"With each passing day, the barrier separating science fiction
and science fact is constantly being eroded" 
credit: SpaceX
Scouring online forums, websites and fan pages in the hours after Musk delivered his keynote, reactions ranged from sheer delight to downright doom and gloom. If Musk's speech was a movie, it would have received mixed reviews, and here's why..

Following the catastrophic loss of two of his Falcon-9 booster's in just fifteen months(for which a smoking gun in the second accident is yet to be identified), SpaceX's reputation as a reliable company capable of delivering payloads and one day astronauts in to space has taken a hard blow.

By the beginning of 2018 Musk hopes to begin conducting missions of its Red Dragon spacecraft(the vehicle that will deliver SpaceX's first astronauts to Mars), with Mars flights set to commence before 2023.

However, with the Hawthorne company yet to deliver a single astronaut to the International Space Station in its Crew Dragon, Elon Musk's timelines for the moment must be taken with a pinch of salt.

In summary, let us recognise that space is an awfully big ocean, and getting comfortable in the shallow cosmic waters of low-Earth orbit is a must before even thinking about venturing any deeper. It is therefore essential that Musk invest as much time and money into figuring what is going wrong with the Falcon-9, before pressing on with bigger issues.

With each passing day, the barrier separating science fiction and science fact is constantly being eroded. But it is mandatory that Musk firstly learns how to fly his troublesome Falcon as close to total reliability as possible. Otherwise, none of this will ever get off the ground - let alone to Mars.

Godspeed, Elon Musk!

Thank you for reading Irish Space Blog!

Sunday, September 8, 2013

This Week's Night Sky: September 9-15

Let's hope the skies stay clear, because as always, we're in for a treat!



Sunday, September 8
The Moon lies 2° below bright Venus after sunset
This morning is the perfect time to look for Mars. The Red Planet is close to the Beehive Cluster(M44) in Cancer the Crab both today and tomorrow, and at magnitude 1.84 it shines 100 times brighter than the cluster's brightest stars. Since the pair are positioned so close together, it's best to use binoculars or a telescope with a wide field of view to see the pair. At 5 a.m. local time they lie 15° above the western horizon.

Look out for yet another conjunction in the west/southwest shortly after sunset, as a young 10% waxing crescent lies roughly 2° below bright Venus. The pair will be visible together for almost an hour after sunset, so make sure you have a clear view of the western horizon, for what should be a great sight!

Monday, September 9

Keep a look out for spectacular Venus after sunset all this week. The planet shines at a dazzling magnitude -3.57 and is easily visible to the naked eye. Make sure you have an unobstructed view of the western horizon to see how bright Venus is. A telescope will reveal its 75% illuminated disc.

Saturn is tricky to find this month, but you can use the 20% illuminated Moon to spot the ringed planet this evening. For observers in Ireland, Saturn lies 2° above the Moon, and the pair are visible for over an hour after sunset. Train your eyes towards the Moon using a small telescope and reveal its ancient mountains and craters casting shadows on the lunar surface. If you want to focus on Saturn, use a telescope to gaze at the gas planet's magnificent rings, which are tilted 18° towards our line of sight.


Tuesday, September 10

Take advantage of Moonless morning skies to see the Zodiacal light. From the Northern Hemisphere, the time around the autumnal equinox is the best for viewing this spectacle. You will need to be in a dark sky location with a clear view of the eastern horizon to observe the cone-shaped haze. Optimum viewing should be just before twilight at 5 a.m. LT.

Mars is also visible in the morning skies all month long. It rises just after 3 a.m. Local Time and appears near the Beehive Cluster in Cancer the Crab. Mars shines nearly 100 times brighter than the cluster's brightest stars, and the pair lie just a degree apart this morning. A pair of binoculars or even a small telescope is the best choice to view this spectacle.

Wednesday, September 11


Jupiter steals the show, as the biggest planet in our solar system rises this morning at around 1 a.m. Local Time, shining at a brilliant magnitude -1.64. A pair of binoculars should reveal the planet's four moons; Io, Europa, Ganymede and Callisto. Point a telescope at the planet and observe its two main cloud bands, and if the time is right and your telescope is big enough, you should be able to see Jupiter's Great Red Spot. By the end of the month Jupiter rises at around midnight, setting it up for some spectacular winter evening viewing!

Thursday, September 12
The path of Comet ISON in September

The much anticipated Comet ISON(C/2012 S1) recently came inside the orbit of Mars, marking its arrival into the inner solar system. Comet hunters need a 10-inch or larger telescope to spot the comet, which currently glows at around 13th or 14th magnitude. It lies around 3° to the north-east of Mars this week, but once again- a large telescope is key to spotting it!

A September morning sky wouldn't be the same without the Great Nebula in Orion. At magnitude 4.0, it is easily visible to the naked eye as a fuzzy patch in the east, but binoculars or a small telescope will reveal its true beauty!

Friday, September 13

If you find yourself away from the city lights, gaze overhead to observe the humbling Magellanic Cloud which spans its way across the sky. Dark skies reveal the haze of millions of stars scattered throughout our Milky Way galaxy. Point a pair of binoculars or a wide-view telescope towards the constellation Cygnus the Swan, to reveal it's main star cluster- M39.

The stunning Lagoon Nebula in Sagittarius
If you have a clear view of the south, try and find the Lagoon Nebula, which is visible at magnitude 5.80. At 9:30 p.m. Local Time it lies just over 12° above the horizon in the constellation Sagittarius. Binoculars will reveal the nebula's oval shape, and you should be able to make out a definite core.





Saturday, September 14

The ever-present Plough/Big Dipper is visible all night long in the northern sky. Use the two stars at the front of the dipper; Merak and Dubhe to draw a line towards Polaris, the North star.

The Pleiades shine with a distinctive blue hue, rising shortly after 10 p.m. local time. Another deep sky object which really makes you think how mind boggling huge the universe really is, you should be able to see several stars packed tightly together with the eye alone- the famous "Seven Sisters" always give you a sense of perspective. A good set of binoculars are the most popular choice of equipment to observe this gem!

Sunday, September 15

The Moon reaches perigee, the closest point in its orbit around the Earth, at 5:31 p.m. Irish Standard Time. Our natural satellite rises at 5:30 p.m. Local Time, and is visible as a 70% waning gibbous until shortly after 2 a.m. A telescope will reveal its ancient craters and mountains casting shadows on the lunar surface in incredible detail.


Stay tuned to Irish Space Blog for all the latest news in the world of space exploration and astronomy! This Week's Night Sky will be published every Sunday, giving an insight into what you should be looking out for in the week ahead. We hope you like it!

Got any comments or queries about our new look? Let us know by commenting down below!

Be sure to follow Irish Space Blog on Twitter and Like us on Facebook

Thanks for reading!



Sunday, September 1, 2013

This Week's Night Sky: September 2-8 2013

If the skies stay clear, it promises to be a great week for observing.


Monday, September 2
The largest planet in our solar system Jupiter rises at 1:37 a.m. Local Time, allowing pre-dawn observers a great chance to see the giant planet shining at magnitude -1.61. Telescopes will easily reveal the planets two darkest cloud belts, as well as the Jovian satellites; Ganymede, Callisto, Io and Europa; orbiting the planet.

The Aurigid Meteor Shower peaked on the first of this month, but keep your eyes peeled for some shooting stars. Although it won't be as spectacular as last month's Perseids, observers can expect to see up to 14 meteors per hour due to the absence of the Moon. So far it has been producing more meteors than previously expected, so you never know how many you might see!

Tuesday, September 3
September is a great month to turn your attention to the constellation of Cygnus the Swan. Try and locate the open cluster M39, just one of the many star clusters located within the constellation.

It's a sure sign that Winter is on the way when you see the constellation Orion the Hunter dominating the early-morning sky. At magnitude 4.0, the Orion Nebula is easily visible to the naked eye as a fuzzy patch in the east, but binoculars or a small telescope will reveal its true beauty.

Wednesday, September 4
Find the Pleiades in the early morning sky
The Pleiades shine with a distinctive blue hue, rising shortly after 10 p.m. local time. Another deep sky object which really makes you think how mind boggling huge the universe really is, you should be able to see several stars packed tightly together with the eye alone- the famous "Seven Sisters" always give you a sense of perspective. A good set of binoculars are the most popular choice of equipment to observe this gem!



Thursday, September 5
A new Moon occurs at 12:36 a.m. Irish Standard Time, as Earth's satellite crosses the sky with the Sun and is lost in our star's glare in the process.

Although Neptune reached opposition on August 26, the solar system's outermost planet is still easily visible through binoculars, provided that you know where to look. The gas giant appears due south shortly after midnight this week, and shines at a dim magnitude 7.8. To locate Neptune, find the 5th-magnitude star Sigma Aquarii, which lies near the center of the constellation Aquarius. At the moment the planet appears 2° west of this star.

Friday, September 6
Venus shines at an extremely bright magnitude -4.0 shortly after sunset this week. It stands around 10° above the horizon 30 minutes after sunset.. For observers with a clear view of the western horizon, point a telescope or a strong pair of binoculars at the planet to reveal a stunning world which appears 75% lit.

Even though Saturn looked best back in late April, the ringed planet can still be easily seen in the south-west for well over an hour after sunset. The gas-planet's spectacular rings are tilted 18° towards our line of sight, so telescopes will reveal this truly spectacular sight. If conditions are good enough, you will discover Saturn's largest moon Titan, visible through telescopes at magnitude 9.28.

Saturday, September 7

Find the Nova Delphini in the southern sky before midnight
There's  no sign of the Moon tonight, so take advantage of the dark skies to observe the constellations. Try and find Delphinus, the dolphin-shaped constellation can be used to spot the Nova Delphini. For stargazers in dark sky locations, it might still be visible to the naked eye. Look 5° above the diamond, and you should spot the dim eruption easily through a pair of binoculars- a telescopic view is even better! A nova is a powerful eruption from star, but is not as strong as a supernova, which is a catastrophic explosion that signals the death of a star.

The ever-present Plough/Big Dipper is visible all night long in the northern sky. Use the two stars at the front of the dipper; Merak and Dubhe to draw a line towards Polaris, the North star.

Sunday, September 8
This morning is the perfect time to look for Mars. The Red Planet is close to the Beehive Cluster(M44) in Cancer the Crab both today and tomorrow, and at magnitude 1.84 it shines 100 times brighter than the cluster's brightest stars. Since the pair are positioned so close together, it's best to use binoculars or a telescope with a wide field of view to see the pair. At 5 a.m. local time they lie 15° above the western horizon.

Look out for yet another conjunction in the west/southwest shortly after sunset, as a young 10% waxing crescent lies roughly 2° above bright Venus. The pair will be visible together for almost an hour after sunset and should be a great sight!

Stay tuned to Irish Space Blog for all the latest news in the world of space exploration & astronomy! This Week's Night Sky will be published every Sunday to let you know what to see in the sky for the week ahead. We hope you like it!

Got any comments or queries about our new look? Leave a comment down below!

Be sure to follow Irish Space Blog on Twitter and Like us on Facebook.

Thanks for reading!