The Red Planet last made an approach this close in 2003 when it came within 34.6 million miles of Earth.
Here is when and how users can get the best view of Mars, and why this opposition is different from its previous versions.
The Red Planet is now brighter than usual and will glow even more - and look larger - tonight. And if you miss it this time around, you'll have to wait another 269 years before it comes around again.
In 2003, Mars and Earth were at their closest in almost 60,000 years, coming within 34.6 million miles of each other.
There is presently a planet-wide dust storm on Mars, a phenomenon that is said to occur when the planet is closest to the sun in its orbit.
The evening of 31 July will see Mars will appear quite brightly, omitting an orange-red colour.
Don't forget to look up and catch a glimple of a brigher Mars tonight as the Red Planet makes its closest approach to Earth in 15 years on Tuesday when the two planets will be 57.6 million kilometres apart.
Glen Nagle, of CSIRO Astronomy and Space Science, told nine.com.au that Earth is now in "opposition", meaning Mars and the sun will be on precise opposite sides of our planet.
MARS is set to be visible in the skies above Ireland on Tuesday night and Wednesday morning, with the Red Planet set to pass closer to Earth than it has been at any time in the last 15 years. In the video, you can see telescopic imagery of the Red Planet, conversations between scientists as they observe the night sky, and guest appearances by a number of people, including "Star Trek: Voyager" actor Tim Russ, and former NASA astronaut Buzz Aldrin. It will be brighter than the gas giant Jupiter and as bright as Saturn in the night sky.
This process of colonising other planets is known as terraforming when it refers to shaping their environments so they are more like Earth.
But just in case you miss Mars Close Approach this year, the next one is scheduled to take place on October 6, 2020.
Mars will be closer to Earth this month.
Observatories across the United States are hosting Mars-viewing events right now.
"It is significant.... If you look at Mars through a telescope, it appears about twice as big now as it would have appeared, say, seven years ago".
With a market capitalization of more than $900 billion, Apple is tickling at the title of world's first trillion-dollar company. Services revenue was US$9.5 billion, beating analyst expectations of US$9.1 billion, according to Thomson Reuters I/B/E/S.
However, Twitter stopped disclosing the number of daily users in June last year, only year-over-year percentage changes. Chief executive Jack Dorsey said Twitter prioritied the long-term health of the platform over short-term metrics.
On Tuesday, North and South Korean athletes trained together in rowing and canoeing in southern South Korea. The ministry said on Monday it's it has been consistently cooperating with the commission's requests.
Still, it's nice to see some variation within the app, especially since it hasn't received a design update for a long time. But you can always go to the General Settings options to toggle it on or off at will as Redditor Absinth92 indicates.
In addition to the two Americans - one woman and one man - a Swiss man and a Dutch national were also reportedly killed. Authorities have also arrested a third suspect and recovered a damaged auto they believe was involved in the case.
Manafort then asked the federal appeals court in Washington, DC, to review her decision. "Obviously, that's very risky for him". Jurors are expected to see photographs of his Mercedes-Benz and of his Hampton property putting green and swimming pool.
But Berbatov thinks it would be a huge mistake if the Red Devils did part company with Martial, who he played alongside at Monaco. Hence, Mourinho will be hoping to get a good momentum once his star players join the squad in the Premier League .
In June, The New York Times revealed that not only had the President known about the statement, but that he had dictated himself. The president has denied he knew about the meeting, in which damaging information on Hillary Clinton was promised to Trump Jr.
As a result, the state attorneys are also suing the Trump administration for making the settlement with Wilson. They were not named as defendants in the lawsuit brought by the Washington state attorney general.
But not, interestingly, for the Chinese. "The lobsterman and lobster dealer, yes, but every single person we do business with". No country could have a more unqualified economic team than Trump's, and a majority of Americans are not behind the trade war.
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People released from immigration detention centers are often dropped off at the McAllen bus station in the Rio Grande Valley. According to Monday's filing, the government has reunited 879 parents with their children so far, up from 450 on Friday.